The compartment containing the anterior extremities and half the inferior surface of the temporal lobes (TEMPORAL LOBE) of the cerebral hemispheres. Lying posterior and inferior to the anterior cranial fossa (CRANIAL FOSSA, ANTERIOR), it is formed by part of the TEMPORAL BONE and SPHENOID BONE. It is separated from the posterior cranial fossa (CRANIAL FOSSA, POSTERIOR) by crests formed by the superior borders of the petrous parts of the temporal bones.
The compartment containing the inferior part and anterior extremities of the frontal lobes (FRONTAL LOBE) of the cerebral hemispheres. It is formed mainly by orbital parts of the FRONTAL BONE and the lesser wings of the SPHENOID BONE.
The infratentorial compartment that contains the CEREBELLUM and BRAIN STEM. It is formed by the posterior third of the superior surface of the body of the sphenoid (SPHENOID BONE), by the occipital, the petrous, and mastoid portions of the TEMPORAL BONE, and the posterior inferior angle of the PARIETAL BONE.
The inferior region of the skull consisting of an internal (cerebral), and an external (basilar) surface.
Intracranial or spinal cavities containing a cerebrospinal-like fluid, the wall of which is composed of arachnoidal cells. They are most often developmental or related to trauma. Intracranial arachnoid cysts usually occur adjacent to arachnoidal cistern and may present with HYDROCEPHALUS; HEADACHE; SEIZURES; and focal neurologic signs. (From Joynt, Clinical Neurology, 1994, Ch44, pp105-115)
Surgery performed on the external, middle, or internal ear.
Benign and malignant neoplasms that arise from one or more of the twelve cranial nerves.
Diseases of the trigeminal nerve or its nuclei, which are located in the pons and medulla. The nerve is composed of three divisions: ophthalmic, maxillary, and mandibular, which provide sensory innervation to structures of the face, sinuses, and portions of the cranial vault. The mandibular nerve also innervates muscles of mastication. Clinical features include loss of facial and intra-oral sensation and weakness of jaw closure. Common conditions affecting the nerve include brain stem ischemia, INFRATENTORIAL NEOPLASMS, and TRIGEMINAL NEURALGIA.
Any operation on the cranium or incision into the cranium. (Dorland, 28th ed)
Either of a pair of compound bones forming the lateral (left and right) surfaces and base of the skull which contains the organs of hearing. It is a large bone formed by the fusion of parts: the squamous (the flattened anterior-superior part), the tympanic (the curved anterior-inferior part), the mastoid (the irregular posterior portion), and the petrous (the part at the base of the skull).
Neoplasms of the base of the skull specifically, differentiated from neoplasms of unspecified sites or bones of the skull (SKULL NEOPLASMS).
Diseases of the facial nerve or nuclei. Pontine disorders may affect the facial nuclei or nerve fascicle. The nerve may be involved intracranially, along its course through the petrous portion of the temporal bone, or along its extracranial course. Clinical manifestations include facial muscle weakness, loss of taste from the anterior tongue, hyperacusis, and decreased lacrimation.
The outermost of the three MENINGES, a fibrous membrane of connective tissue that covers the brain and the spinal cord.
Junction between the cerebellum and the pons.
A group of congenital malformations involving the brainstem, cerebellum, upper spinal cord, and surrounding bony structures. Type II is the most common, and features compression of the medulla and cerebellar tonsils into the upper cervical spinal canal and an associated MENINGOMYELOCELE. Type I features similar, but less severe malformations and is without an associated meningomyelocele. Type III has the features of type II with an additional herniation of the entire cerebellum through the bony defect involving the foramen magnum, forming an ENCEPHALOCELE. Type IV is a form a cerebellar hypoplasia. Clinical manifestations of types I-III include TORTICOLLIS; opisthotonus; HEADACHE; VERTIGO; VOCAL CORD PARALYSIS; APNEA; NYSTAGMUS, CONGENITAL; swallowing difficulties; and ATAXIA. (From Menkes, Textbook of Child Neurology, 5th ed, p261; Davis, Textbook of Neuropathology, 2nd ed, pp236-46)
Congenital, inherited, or acquired abnormalities involving ARTERIES; VEINS; or venous sinuses in the BRAIN; SPINAL CORD; and MENINGES.
A light and spongy (pneumatized) bone that lies between the orbital part of FRONTAL BONE and the anterior of SPHENOID BONE. Ethmoid bone separates the ORBIT from the ETHMOID SINUS. It consists of a horizontal plate, a perpendicular plate, and two lateral labyrinths.
Pathological processes of the ear, the hearing, and the equilibrium system of the body.
A benign tumor composed of bone tissue or a hard tumor of bonelike structure developing on a bone (homoplastic osteoma) or on other structures (heteroplastic osteoma). (From Dorland, 27th ed)
The numerous (6-12) small thin-walled spaces or air cells in the ETHMOID BONE located between the eyes. These air cells form an ethmoidal labyrinth.
Intracranial tumors originating in the region of the brain inferior to the tentorium cerebelli, which contains the cerebellum, fourth ventricle, cerebellopontine angle, brain stem, and related structures. Primary tumors of this region are more frequent in children, and may present with ATAXIA; CRANIAL NERVE DISEASES; vomiting; HEADACHE; HYDROCEPHALUS; or other signs of neurologic dysfunction. Relatively frequent histologic subtypes include TERATOMA; MEDULLOBLASTOMA; GLIOBLASTOMA; ASTROCYTOMA; EPENDYMOMA; CRANIOPHARYNGIOMA; and choroid plexus papilloma (PAPILLOMA, CHOROID PLEXUS).
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
An irregular unpaired bone situated at the SKULL BASE and wedged between the frontal, temporal, and occipital bones (FRONTAL BONE; TEMPORAL BONE; OCCIPITAL BONE). Sphenoid bone consists of a median body and three pairs of processes resembling a bat with spread wings. The body is hollowed out in its inferior to form two large cavities (SPHENOID SINUS).
The dense rock-like part of temporal bone that contains the INNER EAR. Petrous bone is located at the base of the skull. Sometimes it is combined with the MASTOID PROCESS and called petromastoid part of temporal bone.
The posterior part of the temporal bone. It is a projection of the petrous bone.
A retention cyst of the salivary gland, lacrimal sac, paranasal sinuses, appendix, or gallbladder. (Stedman, 26th ed)
A neoplasm that arises from SCHWANN CELLS of the cranial, peripheral, and autonomic nerves. Clinically, these tumors may present as a cranial neuropathy, abdominal or soft tissue mass, intracranial lesion, or with spinal cord compression. Histologically, these tumors are encapsulated, highly vascular, and composed of a homogenous pattern of biphasic fusiform-shaped cells that may have a palisaded appearance. (From DeVita Jr et al., Cancer: Principles and Practice of Oncology, 5th ed, pp964-5)
Either of a pair of bones that form the prominent part of the CHEEK and contribute to the ORBIT on each side of the SKULL.
Accumulation of blood in the SUBDURAL SPACE between the DURA MATER and the arachnoidal layer of the MENINGES. This condition primarily occurs over the surface of a CEREBRAL HEMISPHERE, but may develop in the spinal canal (HEMATOMA, SUBDURAL, SPINAL). Subdural hematoma can be classified as the acute or the chronic form, with immediate or delayed symptom onset, respectively. Symptoms may include loss of consciousness, severe HEADACHE, and deteriorating mental status.
Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.
Veins draining the cerebrum.
Part of the back and base of the CRANIUM that encloses the FORAMEN MAGNUM.
Rare, benign, chronic, progressive metaplasia in which cartilage is formed in the synovial membranes of joints, tendon sheaths, or bursae. Some of the metaplastic foci can become detached producing loose bodies. When the loose bodies undergo secondary calcification, the condition is called synovial osteochondromatosis.
Accumulation of blood in the SUBDURAL SPACE over the CEREBRAL HEMISPHERE.
Leakage and accumulation of CEREBROSPINAL FLUID in the subdural space which may be associated with an infectious process; CRANIOCEREBRAL TRAUMA; BRAIN NEOPLASMS; INTRACRANIAL HYPOTENSION; and other conditions.
A delicate membrane enveloping the brain and spinal cord. It lies between the PIA MATER and the DURA MATER. It is separated from the pia mater by the subarachnoid cavity which is filled with CEREBROSPINAL FLUID.
One of the paired, but seldom symmetrical, air spaces located between the inner and outer compact layers of the FRONTAL BONE in the forehead.
Neoplasms of the bony part of the skull.
Benign and malignant neoplastic processes that arise from or secondarily involve the meningeal coverings of the brain and spinal cord.
Severe or complete loss of facial muscle motor function. This condition may result from central or peripheral lesions. Damage to CNS motor pathways from the cerebral cortex to the facial nuclei in the pons leads to facial weakness that generally spares the forehead muscles. FACIAL NERVE DISEASES generally results in generalized hemifacial weakness. NEUROMUSCULAR JUNCTION DISEASES and MUSCULAR DISEASES may also cause facial paralysis or paresis.
Tumors or cancer of the PARANASAL SINUSES.
Accumulation of blood in the EPIDURAL SPACE between the SKULL and the DURA MATER, often as a result of bleeding from the MENINGEAL ARTERIES associated with a temporal or parietal bone fracture. Epidural hematoma tends to expand rapidly, compressing the dura and underlying brain. Clinical features may include HEADACHE; VOMITING; HEMIPARESIS; and impaired mental function.
Surgery performed on the nervous system or its parts.
One of the paired air spaces located in the body of the SPHENOID BONE behind the ETHMOID BONE in the middle of the skull. Sphenoid sinus communicates with the posterosuperior part of NASAL CAVITY on the same side.
A small space in the skull between the MAXILLA and the SPHENOID BONE, medial to the pterygomaxillary fissure, and connecting to the NASAL CAVITY via the sphenopalatine foramen.
An abnormal direct communication between an artery and a vein without passing through the CAPILLARIES. An A-V fistula usually leads to the formation of a dilated sac-like connection, arteriovenous aneurysm. The locations and size of the shunts determine the degree of effects on the cardiovascular functions such as BLOOD PRESSURE and HEART RATE.
The SKELETON of the HEAD including the FACIAL BONES and the bones enclosing the BRAIN.
Diseases of the bony orbit and contents except the eyeball.
The space and structures directly internal to the TYMPANIC MEMBRANE and external to the inner ear (LABYRINTH). Its major components include the AUDITORY OSSICLES and the EUSTACHIAN TUBE that connects the cavity of middle ear (tympanic cavity) to the upper part of the throat.
An irregularly shaped venous space in the dura mater at either side of the sphenoid bone.
Neoplasms of the bony orbit and contents except the eyeball.
Radiography of the vascular system of the brain after injection of a contrast medium.
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
A congenital abnormality of the central nervous system marked by failure of the midline structures of the cerebellum to develop, dilation of the fourth ventricle, and upward displacement of the transverse sinuses, tentorium, and torcula. Clinical features include occipital bossing, progressive head enlargement, bulging of anterior fontanelle, papilledema, ataxia, gait disturbances, nystagmus, and intellectual compromise. (From Menkes, Textbook of Child Neurology, 5th ed, pp294-5)
Artery formed by the bifurcation of the BASILAR ARTERY. Branches of the posterior cerebral artery supply portions of the OCCIPITAL LOBE; PARIETAL LOBE; inferior temporal gyrus, brainstem, and CHOROID PLEXUS.
A strong ligament of the knee that originates from the anterolateral surface of the medial condyle of the femur, passes posteriorly and inferiorly between the condyles, and attaches to the posterior intercondylar area of the tibia.
Primary or metastatic neoplasms of the CEREBELLUM. Tumors in this location frequently present with ATAXIA or signs of INTRACRANIAL HYPERTENSION due to obstruction of the fourth ventricle. Common primary cerebellar tumors include fibrillary ASTROCYTOMA and cerebellar HEMANGIOBLASTOMA. The cerebellum is a relatively common site for tumor metastases from the lung, breast, and other distant organs. (From Okazaki & Scheithauer, Atlas of Neuropathology, 1988, p86 and p141)
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
Inflammation of the choroid as well as the retina and vitreous body. Some form of visual disturbance is usually present. The most important characteristics of posterior uveitis are vitreous opacities, choroiditis, and chorioretinitis.
Diseases that affect the structure or function of the cerebellum. Cardinal manifestations of cerebellar dysfunction include dysmetria, GAIT ATAXIA, and MUSCLE HYPOTONIA.
The part of the hypothalamus posterior to the middle region consisting of several nuclei including the medial maxillary nucleus, lateral mammillary nucleus, and posterior hypothalamic nucleus (posterior hypothalamic area). The posterior hypothalamic area is concerned with control of sympathetic responses and is sensitive to conditions of decreasing temperature and controls the mechanisms for the conservation and increased production of heat.
An irregularly shaped cavity in the RHOMBENCEPHALON, located between the MEDULLA OBLONGATA; the PONS; and the isthmus in front, and the CEREBELLUM behind. It is continuous with the central canal of the cord below and with the CEREBRAL AQUEDUCT above, and through its lateral and median apertures it communicates with the SUBARACHNOID SPACE.
A calcification of the posterior longitudinal ligament of the spinal column, usually at the level of the cervical spine. It is often associated with anterior ankylosing hyperostosis.
The posterior process on the ramus of the mandible composed of two parts: a superior part, the articular portion, and an inferior part, the condylar neck.

Cerebellar infarct caused by spontaneous thrombosis of a developmental venous anomaly of the posterior fossa. (1/258)

Spontaneous thrombosis of a posterior fossa developmental venous anomaly (DVA) caused a nonhemorrhagic cerebellar infarct in a 31-year-old man who also harbored a midbrain cavernous angioma. DVA thrombosis was well depicted on CT and MR studies and was proved at angiography by the demonstration of an endoluminal clot.  (+info)

Abnormal prenatal sonographic findings in the posterior cranial fossa: a case of Joubert's syndrome. (2/258)

Joubert's syndrome is a well-documented but rare disorder characterized by a variable combination of central nervous system, respiratory, renal and eye anomalies. The most significant and constant neuropathological finding is partial or complete agenesis of the cerebellar vermis. The syndrome was first described by Joubert and colleagues as a familial agenesis of the cerebellar vermis and appears to be inherited as an autosomal recessive trait. A case of Joubert's syndrome is described in which second-trimester ultrasonography demonstrated abnormal findings in the fetal posterior fossa with associated renal abnormalities. However, postnatal sonography of the posterior fossa could not confirm the prenatal findings, and the diagnosis of Joubert's syndrome was only later established by computed tomography of the neonatal brain in the knowledge of the characteristic clinical picture.  (+info)

Posterior fossa epithelial cyst: case report and review of the literature. (3/258)

A 49-year old woman with progressive cranial nerve signs and hemiparesis was found at MR imaging and at surgery to have a cyst at the foramen magnum. Immunohistochemistry and electron microscopy showed an epithelial cyst of endodermal origin. MR findings were of an extraaxial mass, with short T1 and T2 times. Unless immunohistochemistry and electron microscopy are used in the final diagnosis of such cysts, all posterior fossa cysts lined by a single layer of epithelium should be described simply as epithelial cysts.  (+info)

Magnetic resonance imaging supplements ultrasonographic imaging of the posterior fossa, pharynx and neck in malformed fetuses. (4/258)

OBJECTIVE: The objective of this study was to compare antepartum ultrasonography and magnetic resonance imaging (MRI) in the diagnosis and exclusion of malformations of the fetal neck, pharynx, skull base and posterior fossa in late pregnancy. MATERIALS AND METHODS: The study involved 26 women and 27 fetuses with ultrasonographically or clinically suspected abnormalities of the fetal neck, pharynx or central nervous system (CNS). Findings obtained by ultrasound were compared with those obtained by MRI (1.5 T) in the last trimester. RESULTS: In cases with CNS malformation (n = 19), MRI provided additional information on the anatomy of the foramen magnum and posterior fossa in nine cases (47%). When antepartum ultrasonography indicated malformation of the soft tissues of the neck or pharynx (n = 8), MRI provided additional information on diagnosis or exclusion of the abnormality in six cases (75%). The imaging capacity of the anatomy of the naso-, oro- and hypopharynx, trachea, esophagus and cervical skin outlines was better with MRI. CONCLUSIONS: MRI proved to be a valuable supplementary method to ultrasound in obtaining accurate information from the fetal neck, pharynx and posterior fossa, particularly when acoustic shadowing by bony structures or adjacent malformation impaired the quality of the ultrasonographic examination.  (+info)

Midline cerebellar cystic schwannoma : a case report. (5/258)

An extremely unusual case of a cystic schwannoma in the region of the inferior vermis and posterior to the fourth ventricle in a fifteen year old boy is reported. The cystic tumour caused partial obstruction to the outflow of cerebrospinal fluid from fourth ventricle and resulted in development of supratentorial hydrocephalus. On investigations, the schwannoma simulated a Dandy-Walker cyst. The boy presented with symptoms of increased intracranial pressure. On surgery, the lesion was not arising from any cranial nerve, nor was it attached to brain parenchyma, blood vessel or to the dura. The possible histogenesis of the cystic schwannoma in a rare location is discussed.  (+info)

Avulsion fracture of the anterior half of the foramen magnum involving the bilateral occipital condyles and the inferior clivus--case report. (6/258)

A 38-year-old male presented with an avulsion fracture of the anterior half of the foramen magnum due to a traffic accident. He had palsy of the bilateral VI, left IX, and left X cranial nerves, weakness of his left upper extremity, and crossed sensory loss. He was treated conservatively and placed in a halo brace for 16 weeks. After immobilization, swallowing, hoarseness, and left upper extremity weakness improved. Hyperextension with a rotatory component probably resulted in strain in the tectorial membrane and alar ligaments, resulting in avulsion fracture at the sites of attachment, the bilateral occipital condyles and the inferior portion of the clivus. Conservative treatment is probably optimum even for this unusual and severe type of occipital condyle fracture.  (+info)

Neurodevelopmental outcome after antenatal diagnosis of posterior fossa abnormalities. (7/258)

Posterior fossa abnormalities are sonographically diagnosable in the fetus. Anomalies of this region include Dandy-Walker malformation, enlarged cisterna magna, and arachnoid cyst. Despite prenatal diagnosis, the uncertainties related to natural history and neurodevelopmental outcome in survivors make patient counseling difficult. The purposes of this study were to determine the accuracy of prenatal diagnosis of these lesions and elucidate long-term neurodevelopmental outcome in survivors in prenatally diagnosed posterior fossa abnormalities. Fifteen cases of posterior fossa abnormalities were reviewed. Antenatal diagnoses of Dandy-Walker malformation was made in 13 of these cases, arachnoid cyst in one case, and enlarged cisterna magna in one case. Hydrocephalus was present in 66% of patients. The sonographic diagnosis was concordant with the pathologic or neonatal radiologic diagnosis in 13 of 15 cases. Seven fetuses (47%) exhibited additional cranial or extracranial anomalies. A karyotypic abnormality (trisomy 18) was found in one of 15 cases of posterior fossa abnormalities. Neurodevelopmental delay was present in 80% of survivors with follow-up study to 4 years of age. Prenatal diagnosis of posterior fossa abnormalities is highly accurate, yet the differential diagnosis can be challenging. Cognitive and psychomotor developmental delays remain commonplace despite early diagnosis and treatment. The approach with families in cases of prenatal diagnosis of posterior fossa abnormalities should include a search for additional central nervous system and extra-central nervous system anomalies in the fetus and counseling of parents regarding potential adverse outcome for survivors.  (+info)

Tumour type and size are high risk factors for the syndrome of "cerebellar" mutism and subsequent dysarthria. (8/258)

OBJECTIVE: "Cerebellar mutis" and subsequent dysarthria (MSD) is a documented complication of posterior fossa surgery in children. In this prospective study the following risk factors for MSD were assessed: type, size and site of the tumour; hydrocephalus at presentation and after surgery, cerebellar incision site, postoperative infection, and cerebellar swelling. METHODS: In a consecutive series of 42 children with a cerebellar tumour, speech and neuroradiological studies (CT and MRI) were systematically analysed preoperatively and postoperatively. Speech was assessed using the Mayo Clinic lists and the severity of dysarthria using the Michigan rating scale. RESULTS: Twelve children (29%) developed MSD postoperatively. The type of tumour, midline localisation, and vermal incision were significant single independent risk factors. In addition, an interdependency of possible risk factors (tumour>5 cm, medulloblastoma) was found. CONCLUSION: MSD often occurs after paediatric cerebellar tumour removal and is most likely after removal of a medulloblastoma with a maximum lesion diameter>5 cm.  (+info)

Aneurysms that involve the internal carotid artery and posterior communicating artery junction and incorporate a fetal posterior cerebral artery are known as fetal posterior communicating artery aneurysms. We report the outcomes of four patients with fetal posterior communicating artery aneurysms who underwent treatment with the pipeline embolization device with or without adjunctive coil embolization. In our study, all four patients failed to achieve aneurysm occlusion at the last follow-up evaluation. Based on our results, we currently do not recommend the use of the flow diverter for the treatment of fetal posterior communicating artery aneurysms.
2The Second Affiliated Hospital of Xinjiang Medical University, Department of Neurosurgery, Urumqi, China DOI : 10.5137/1019-5149.JTN.8670-13.1 AIM: This study aimed to investigate the operative procedure for neuroendoscope-assisted microscopic resection of petroclival meningioma to improve prognosis.. MATERIAL and METHODS: Twelve patients with petroclival meningioma who had undergone neuroendoscope-assisted microscopic resection at the Department of Neurosurgery, First Affiliated Hospital of Xinjiang Medical University were selected. In addition, 12 patients with petroclival meningioma who had undergone microscopic surgery were used as control. Clinical data from the 24 cases of petroclival meningioma were analyzed.. RESULTS: For the neuroendoscope-assisted group, six, five, and one cases were respectively subjected to total resection, subtotal resection, and most resection. For the microscopic surgery group, two, three, and seven cases were respectively subjected to total resection, subtotal ...
BACKGROUND: The specificity of imaging alone in diagnosing posterior fossa lesions is insufficient, hence the importance of biopsy for diagnostic, therapeutic and prognostic purposes. Concerning the operative technique, many studies have demonstrated the superior safety of stereotactic biopsy over craniotomy and superior accuracy of frame-based systems over frameless ones as far as the posterior fossa is concerned; however versatile, frame-based instruments bear some intrinsic limitations in the positioning of frame in lower lesions mainly in short neck and kyphotic patients. For all these reasons, a more proficient technical bioptic approach to the posterior fossa and lower brainstem is sometimes required ...
Gamma knife radiosurgical management of petroclival meningiomas results and indications.: Stereotactic radiosurgery with a Gamma knife provides effective manage
The Neurosurgical Atlas depends almost entirely on your donations. We are unable to continue the Atlas without a significant donation from you.. Please commit at least a yearly $250 donation to the Atlas.. Without this commitment, the Atlas will soon require a paid subscription and will become inaccessible to many surgeons around the world whose patients care depend on it. Please donate now!. ...
Dr. Guive Sharifi, associate professor in Shahid Beheshti University, is a specialist in complex brain and spine surgeries. In the field of neurosurgery, he is one of the pioneers in Iran from clinical and research perspective.. ...
Hello everyone,I am having surgery for a 4cm meningioma in the posterior fossa on the right side of the brain in 2 weeks. Has anyone had surgery to remove a tumor in this area.
Synonyms for condylar fossa, condyloid fossa in Free Thesaurus. Antonyms for condylar fossa, condyloid fossa. 4 synonyms for fossa: pit, genus Fossa, Cryptoprocta ferox, fossa cat. What are synonyms for condylar fossa, condyloid fossa?
cranial nerve emerging from the ventral surface of the medulla lateral and inferior to the olive and just caudal to the vagus nerve and from the ventral surface of the cervical spinal cord; its cranial root joins the vagus nerve; its spinal root arises from upper levels of the cervical spinal cord and courses superiorly to enter the posterior cranial cavity by passing through the foramen magnum; the spinal portion courses inferiorly to exit the posterior cranial fossa by passing through the jugular foramen in company with the glossopharyngeal and vagus nn ...
Petroclival Meningioma surgical case study courtesy of Farhad Limonadi MD, neurology specialist providing treatment for brain and spine tumors, neck pain and back pain.
T2 weighted axial image through the posterior fossa reveals the cerebellum is normally formed, and the 4th ventricle is patent. There is no cleft palate.
There are 50+ types of open source licenses. FOSSA analyzes the open source code within your code base, allowing developers and enterprises to proactively identify license-related risks in their code base and to satisfy license obligations.. FOSSA helps companies understand what is in their code, how to manage risk, and intelligently assemble better code. FOSSA links into your code base (one-click integration with Github and easy to point it to other external sources) and runs a mock build on your code. From this, FOSSA gleans which open source projects you are leveraging and which licenses you are beholden to.. Companies can create bespoke license policies for their business and compliance requirements and FOSSA will identify any license exposure that falls outside the policy. FOSSA integrates with project management and error tracking systems (such as Jira) and fits into existing software development workflows rather than forcing developers to spend more time inside FOSSA.. ...
I was diagnoised with a Posterior fossa cyst 6 yrs ago, we found it when a doctor finally stoped looking at indivdual issues and looked at all of them. I was told as long as it didnt grow not to .... ...
The CM8 Next-Gen is a split unit (below-floor) composting toilet system designed to be used by 5 people full time, and up to 10 people part-time. These systems are made from high-quality materials and are built to stand the test of time.
TY - JOUR. T1 - A Case of Ecchordosis Physaliphora in the Prepontine Cistern. T2 - A Rare Entity in the Differential Diagnosis of an Epidermoid Cyst. AU - Miki, Kenji. AU - Yoshimoto, Koji. AU - Nishimura, Ataru. AU - Suzuki, Satoshi O.. AU - Hiwatashi, Akio. AU - Iihara, Koji. PY - 2017/9. Y1 - 2017/9. N2 - Background Ecchordosis physaliphora (EP) is a benign notochordal remnant that is usually asymptomatic. We report a case of a symptomatic large EP mimicking an epidermoid cyst. Case Description A 44-year-old woman presented with right facial dysesthesia. Brain magnetic resonance imaging showed a mass with a diameter of 3.2 cm that was hypointense on T1-weighted imaging, hyperintense on T2-weighted imaging, isointense to hyperintense on diffusion-weighted imaging, and hyperintense on apparent diffusion coefficient map (1.2-1.6 × 10−3 mm2/second). There was no apparent contrast enhancement. Differential diagnoses included epidermoid cyst, dermoid cyst, EP, chordoma, chondrosarcoma, ...
TY - JOUR. T1 - Spontaneous posterior fossa subdural hematoma as a complication of anticoagulation. AU - Kanter, R.. AU - Kanter, M.. AU - Kirsch, W.. AU - Rosenberg, G.. PY - 1984/1/1. Y1 - 1984/1/1. N2 - We report a patient in whom a spontaneous subdural hematoma developed in the posterior fossa during anticoagulation therapy for mitral valve disease. This rare complication of anticoagulation has been reported in only three other patients.. AB - We report a patient in whom a spontaneous subdural hematoma developed in the posterior fossa during anticoagulation therapy for mitral valve disease. This rare complication of anticoagulation has been reported in only three other patients.. UR - http://www.scopus.com/inward/record.url?scp=0021140535&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0021140535&partnerID=8YFLogxK. U2 - 10.1227/00006123-198408000-00015. DO - 10.1227/00006123-198408000-00015. M3 - Article. C2 - 6483141. AN - SCOPUS:0021140535. VL - 15. SP - 241. EP - ...
TY - JOUR. T1 - Multimodal strategy for managing petroclival meningiomas. AU - Kayama, Takamasa. AU - Sonoda, Yukihiko. AU - Sakurada, Kaori. AU - Sato, Shinya. AU - Saito, Shinjiro. N1 - Copyright: Copyright 2018 Elsevier B.V., All rights reserved.. PY - 2005/7. Y1 - 2005/7. N2 - INTRODUCTION: To avoid any morbidity occuring after surgery for petroclival meningioma, we use the following treatment strategy: (1) the tumor should be left undetached in cases where there is no CSF space between the tumor and the surrounding structures to avoid a new deficit, (2) the residual volume should be reduced to less than 20 ml, small enough for radiosurgery. The result of our strategy presented. METHODS: During the past 10 years, we treated 13 patients with petroclival meningioma. The tumor volume ranged from 1.0 ml to 70 ml. 11 patients had neurological deficits preoperatively. 11 patients underwent an anterior petrosal approach while 2 patients underwent a far lateral approach according to the tumor ...
Sonography of the posterior fossa in an angled semi-coronal plane should be avoided because it may create an appearance that mimics an abnormality.
Dural sinus thrombosis is a rare complication after posterior fossa surgery, particularly in cerebellar tumour surgery. The authors describe the case of a young male patient who presented a postoperative neurological deterioration due to transverse s
CEREBELLAR ASTROCYTOMAS. Cerebellar Astrocytomas are one of the more common pediatric Brain tumors (10%), comprising 27% of pediatric Posterior Cranial Fossa tumors. They are much less common in adults. The post-operative survival is longer than other types of Astrocytomas. SYMPTOMS. The most frequent and almost universal symptom is Headache with or without Nausea and Vomiting (these latter symptoms usually occur later in the course of the disease when the intracranial pressure is abnormally increased.) In additional to all of the symptoms present in patients with increased intracranial pressure, tumors in the Posterior Cranial Fossa can cause Gait Disturbance, increased Clumsiness as well as Double Vision (Diplopia.) DIAGNOSIS. MRI Scan is the most reliable and accurate neuroimaging procedure.. ...
TY - JOUR. T1 - Persistent hypoglossal artery with hypoplasia of the vertebral and posterior communicating arteries. AU - Terayama, Ryuji. AU - Toyokuni, Yuka. AU - Nakagawa, Shinsuke. AU - Nakatsuji, Kazuki. AU - Nakama, Hitomi. AU - Yamaai, Tomoichiro. AU - Ichikawa, Hiroyuki. AU - Sugimoto, Tomosada. PY - 2011/3. Y1 - 2011/3. N2 - We observed a rare case of the right persistent hypoglossal artery (PHA) in the posterior cranial fossa of a deceased 74-year-old Japanese man who did not have any clinical manifestations related to this anomaly when alive. The large-sized PHA originating from the cervical internal carotid artery passed through the hypoglossal canal together with the hypoglossal nerve and reached the posterior cranial fossa to anastomose the basilar artery. In addition, the ipsilateral vertebral artery and bilateral posterior communicating arteries were hypoplastic. Here, we discuss the developmental mechanisms underlying the formation of the PHA and the spectrum of diseases related ...
Meningiomas are the most common extra-axial tumours of the central nervous system and account for 14-20% of all intracranial neoplasms. They are a non-glial neoplasm that originates from the arachnoid cap cells of the meninges. Petroclival mening...
Two patients sought treatment for symptoms of bulbar motor dysfunction and the marked emotional lability that characterizes pseudobulbar palsy (PBP). Magnetic resonance (MR) imaging showed large petroclival masses with severe compression and displace
TY - JOUR. T1 - Abnormal or delayed development of the posterior membranous area of the brain. T2 - Anatomy, ultrasound diagnosis, natural history and outcome of Blakes pouch cyst in the fetus. AU - Paladini, D.. AU - Quarantelli, M.. AU - Pastore, G.. AU - Sorrentino, M.. AU - Sglavo, G.. AU - Nappi, C.. PY - 2012/3. Y1 - 2012/3. N2 - Objectives To review the normal and pathological development of the posterior membranous area (PMA) in the fetal brain, to define sonographic criteria with which to diagnose a Blakes pouch cyst (BPC) in the fetus and to review the ultrasound features, associations and outcome of 19 cases of BPC seen at our center over the last 5 years. Methods We conducted a MEDLINE search using the terms Blakes pouch, with or without fourth ventricle or 4 th ventricle, with or without roof and identified articles describing normal and/or abnormal development of the PMA, whether or not they were cited in the limited clinical literature on BPC. A description of the ...
This patient clearly has shunt dysfunction accounting for the presentation. The differential for the posterior fossa cyst includes: trapped fourth ventricle intraventricular arachnoid cysts Blakes pouch cyst A trapped fourth ventricle is b...
TY - JOUR. T1 - Fatal hemorrhagic infarction of posterior fossa meningioma during cardiopulmonary bypass. AU - Sun, Hai. AU - Ross, Donald (Don). PY - 2012/2. Y1 - 2012/2. N2 - Few publications address cardiac surgery in the presence of meningioma. Individual complications include transient visual loss from a suprasellar meningioma, hemiparesis after mitral valve replacement with recovery after resection, and non-fatal hemorrhage into a posterior fossa meningioma. The largest report of 16 patients with known meningiomas over 11 years suggested a benign course, with no new neurologic symptoms and no required resection of a meningioma over an average follow-up of 31 months. In 2 cases we report a presumed posterior fossa meningioma led to fatal outcome after cardiac surgery performed on bypass. Possible causes and future considerations are discussed.. AB - Few publications address cardiac surgery in the presence of meningioma. Individual complications include transient visual loss from a ...
RESULTS: Location, mean peak volume, and decrease in enhancing volume over time of the 23 lesions were as follows: 10 splenium of the corpus callosum (295 mm3, 5 decreasing, 3 completely resolving, 2 surgical intervention for change in imaging appearance later confirmed to be gangliocytoma and astrocytoma WHO II), 1 body of the corpus callosum (44 mm3, decreasing), 2 frontal lobe white matter (32 mm3, 1 completely resolving), 3 globus pallidus (50 mm3, all completely resolving), 6 cerebellum (206 mm3, 3 decreasing, 1 completely resolving), and 1 midbrain (34 mm3). On average, splenium lesions began to decrease in size at 12.2 years, posterior fossa lesions at 17.1 years, and other locations at 9.4 years of age. ...
Foramen Magnum is the largest foramen within the skull and centrally, in the deepest portion of the posterior cranial fossa. It is surrounded anteriorly by the…
The largest of all the cranial nerves, the trigeminal nerve gives rise to a small motor root originating in the motor nucleus within the pons and medulla oblongata, and a larger sensory root which finds its origin in the anterior aspect of the pons. The nerve travels forward from the posterior cranial fossa to the petrous portion of the temporal bone within the middle cranial fossa. Here, the sensory root forms the trigeminal (semilunar or gasserian) ganglion situated within Meckels cavity on the anterior surface of the petrous portion of the temporal bone. The ganglia are paired, one innervating each side of the face. The sensory root of the trigeminal nerve gives rise to the ophthalmic division (V1), the maxillary division (V2), and the mandibular division (V3) from the ...
Increased sensitivity of MR imaging of the brain has led to increased use of MR imaging to detect and assess malformations of the brain. Congenital malformations of the brain, including midline cerebral anomalies such as holoprosencephaly and posterior fossa anomalies, often are associated with venous anomalies (4-7). The venous system has been imaged with conventional angiography, but MR venography has increasingly been used to study the cerebral venous system. MR venography is noninvasive, does not involve ionizing radiation, and can be performed at the same time as MR imaging in comparatively short acquisition times. An understanding of the normal anatomy of the venous structure and its variations and the development of the venous system is crucial before studying the abnormal venous structure in malformations of the brain. Considerable data are available from conventional angiography studies regarding the intracranial veins and sinuses, but data regarding the capacity of MR venography in ...
Treat hydrocephalus:The first line of treatment is to treat hydrocephalus, as this is usually the cause of brainstem signs (1, 59). A smaller number of children will actually need posterior fossa decompression. The older literature reports a 15% mortality rate and a 30% rate of permanent neurological disability in infants who require posterior fossa decompression (32). Surgeons anecdotal (unpublished) data seem to suggest that these rates have diminished dramatically since paying more attention to the CSF shunts, regardless of ventricular size. ...
A persistent PTA is an uncommon vessel with a reported incidence of 0.03-2.2% in the literature10). Cases of PTA-induced TN are even rarer. During embryonic intracranial vascular development, four main temporal anastomoses arise between the carotid and vertebral-basilar systems10). The trigeminal artery is the largest of the fetal carotid-basilar anastomotic arteries, and it persists for the longest embryonic period6,7). The artery usually involutes after the development of the posterior communicating artery10). The exact causes of the persistence of this primitive vessel into adulthood are not completely clear1). The PTA of adulthood courses through the cavernous sinus and emanates from the posterior wall of the cavernous sinus, following either a para- or intrasellar course1,6,7). The PTA reaches the posterior cranial fossa in two ways : by 1) penetrating the sella turcica, running in its own groove, and perforating the dura mater near the clivus in about half of cases; or by 2) running ...
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MalaCards based summary : Clivus Meningioma, also known as meningioma of the clivus, is related to lower clivus meningioma and upper clivus meningioma, and has symptoms including seizures and headache. An important gene associated with Clivus Meningioma is CISH (Cytokine Inducible SH2 Containing Protein). Affiliated tissues include bone, brain and t cells ...
Dermoid cysts are benign and slow growing, and are usually located near midline within the posterior cranial fossa, parasellar, and sub frontal areas. Symptoms depend on the size, location, and mass effect on adjacent structures. Patients may present with visual disturbances, seizures, diabetes insipidus, or headache. Intraventricular dermoids are most commonly in the fourth ventricle and rarely cause hydrocephalus. Spontaneous rupture, as in this case, can incite a chemical meningitis, resulting in recurrent headaches or seizures. Although rare, the resultant meningeal inflammation can cause vasospasm, and even stroke and death. Traumatic rupture has also been reported. In addition to intracranial involvement, dermoid cysts may also be seen in the scalp, skull, orbit, spine, nasal/oral cavity, and neck. Ovarian (abdominal) dermoids are actually well-differentiated and organized teratomas ...
On magnetic resonance imaging (MRI), ELSTs are generally seen as a heterogeneous mass with hyperintense foci in T1 and T2 sequences as a result of blood products, proteinaceous cysts or cholesterol clefts (Fig. 1-3) [2]. In large tumours - more than 2 cm - signal voids can be caused by vessels and calcifications, whereas these are less likely present in small tumours [4]. Contrast enhancement proves the hypervascular nature of the tumour. Inhomogeneity may be due to the enhancement of the solid portion, whereas calcific density within the lesion can be a result of intratumoural calcification or residual destroyed bone. ELSTs have a high predisposition to extend to the middle ear, cerebellopontine angle, and posterior cranial fossa [2 ...
posterior meningeal artery: branch of the ascending pharyngeal artery that supplies the dura mater of the posterior cranial fossa
In the Blakes 7 episode Gambit, Blake visits Freedom City while looking for Docholli, who may know the location of the Federations main computer system - Star One. While Blake, Jenna and Cally hunt for Docholli, Avon and Vila go gambling with the aid of Orac and make a profit of ten million credits. They get back to the ship just in time to conceal the money from Bake when he teleports back to Liberator.. With a fluid, long-armed grab, Avon snatched up the box of credits. Quick, Vila. Set me down again.. Vilas jaw dropped. What? But he was already responding to Avons urgency by squeezing round to his position behind the teleport console.. Blakes suspicious already; hell figure it out soon enough. I want our money off the ship and in a nice, safe bank.. Finance for a bolt-hole?. Avon allowed a smile to flicker across his face. Precisely. Orac, set co-ordinates for the Grammerian Bank.. Lights flickered on the console as Orac performed its usual electronic wizardry. Avon could ...
An enlarged posterior fossa CSF space posterior to the cerebellum has a number of differentials that include: mega cisterna magna epidermoid cyst arachnoid cyst Careful attention to the cerebellum needs to paid as also to be considered are:...
In neurogenesis, ASPM (abnormal spindle-like microcephaly-associated) gene is expressed mainly in the ventricular zone of posterior fossa and is the major
Hypoplastic cerebellar vermis Large posterior fossa with cystic dilitation of the 4th ventricle. Elevation of the torcula. No lateral or third ventricular enlargement.
Blakes Virtual Designs and Reconstruction of The Song of Los. Un article de la revue Romanticism on the Net (|em|Romanticism on the Net|/em| 1996-2006: Celebrating Ten Years of Online Publishing) diffusée par la plateforme Érudit.
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Looking for synovial fossa? Find out information about synovial fossa. carnivorous mammal, Cryptoprocta ferox, of Madagascar. The islands largest carnivore, the fossa resembles a puma puma or cougar , New World member of the... Explanation of synovial fossa
Definition of fossa in the Get a Grip America. Meaning of fossa with illustrations and photos. Pronunciation of fossa and its etymology. Related words - fossa synonyms, antonyms, hypernyms and hyponyms. Example sentences containing fossa
he had received on that day of days. That tiny piece of black painted metal meant the world to him. It was then and is now, emblematic of who he was, what he had become and who he will always be...for once a Marine, ALWAYS a Marine! Upon graduating from Boot Camp on January 16, 2009, with the rank of Private First Class, Blake moved on to the SOI (School of Infantry) at Camp Geiger, NC. While there he was recognized for his use of novel strategies and tactics in leading his assault team in overtaking a position held by members of the instructor cadre. The surprised and dumbfounded instructors upon being overrun by Blakes team, asked where he had learned those techniques. Blakes reply was that he had devised them during his days of playing paintball and Navy Squeals (a takeoff on the movie Navy SEALS) with his cousins and friends. So impressed with his methods were the staff, that Blakes techniques are now taught to other Marines as part of the curriculum there. His demonstrated ...
Sartori, Giuseppe and Scarpazza, Cristina and Codognotto, Sara and Pietrini, Pietro An unusual case of acquired pedophilic behavior following compression of orbitofrontal cortex and hypothalamus by a Clivus Chordoma. Journal of Neurology, 263 (7). pp. 1454-1455. ISSN 0340-5354 (2016) ...
cellular neurothecoma Definition: Cellular neurothekeomas are distinctive benign cutaneous tumors of uncertain histogenesis. Image cellular (...)
And they had left, barely escaping with a barrage of plasma bolts damaging several of their energy banks. Dayna had called it luck, Tarrant claimed it was his skill. In any words, it had been too close.. But something kept nagging at Avon, telling him that he had to go back, he had to be certain that Vila was dead. It was stupid, of course. Sentiment could kill a man if he allowed it to, but Avon could not shake the feeling. So they had returned two months later and found Vila alive but not the same.. Who could be, after the carnage Avon and Cally saw? The wooded area where Rubins village had been was now nothing more than a blackened, twisted hole some three-quarters of a mile wide. How Vila had escaped from that defied Avons power of reason, but escape he had, though not unscathed. The burns testified to that.. Cally was scouting the area looking for any signs of life when Avon found the footprint. The mark was not left by a Federation boot, but the thought did not reassure Avon as he ...
As Idek, Blake plays a learned scholar who was Rabbi Schmidts best pupil ever. His performance is quiet, assured and sensitive, and ones eyes are riveted on this striking man as he is shorn of his hair and earthly possessions. Blakes dark and beautiful eyes are haunting in this memorable role. Who would have thought that the actor who played Edmund Bertram so capably in 2007s Mansfield Park would be so utterly convincing as a 1940s rabinical scholar? Blakes assessment of Idek is stark: As one of the youngest and most idealistic characters, I think hes unusual in that, certainly at first, he represents a hope and genuine belief that somehow all will be well. Throughout the course of the day, however, as his whole identity is assaulted by losing his clothes, his possessions and his hair, he completely crumbles under the strain. Through him we trace the idealists descent into absolute despair ...
An understanding of the anatomy of the abducent nerve in the petroclival region helps to explain the origin of abducent palsies and is critical for safe surgery in this area.
CT provides rapid, noninvasive imaging of the brain and skull. CT is superior to magnetic resonance imaging (MRI) in visualizing fine bone detail in (but not the contents of) the posterior fossa, base of the skull, and spinal canal.
def posterior_covariance(step_method, trace): bij = pm.DictToArrayBijection(step_method.ordering, step_method.model.test_point) q_size = bij.map(step_method.model.model.test_point).size sample_size = len(trace) posterior = np.empty((q_size, sample_size)) for index, point in enumerate(trace): posterior[:, index] = bij.map(point) posterior_minus_mean = posterior - np.asmatrix(posterior.mean(axis=1)).T normalized_posterior = posterior_minus_mean / np.asmatrix(posterior.std(axis=1)).T cov = np.matmul(normalized_posterior, normalized_posterior.T) return posterior_minus_mean, cov def projection(posterior, cov): U, S, V_h = np.linalg.svd(a=cov, compute_uv=True, full_matrices=True) first_projection = V_h[0, :] last_projection = V_h[-1, :] q_size, samples = posterior.shape projection_matrix = np.empty((samples, 2)) for i in range(samples): projection_matrix[i, 0] = np.matmul(first_projection, posterior_minus_mean[:, i]) projection_matrix[i, 1] = np.matmul(last_projection, posterior_minus_mean[:, i]) ...
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How is Anterior and Posterior abbreviated? A-P stands for Anterior and Posterior. A-P is defined as Anterior and Posterior very frequently.
Arachnoiditis of posterior cranial fossa (blindness, deafness, hemiplegia). Her cure was recognised on 15 August 1956. Visited ...
The cerebellum is located in the posterior cranial fossa. The fourth ventricle, pons and medulla are in front of the cerebellum ... the posterior lobe (below the primary fissure), and the flocculonodular lobe (below the posterior fissure). These lobes divide ... The medial zone of the anterior and posterior lobes constitutes the spinocerebellum, also known as paleocerebellum. This sector ... Campbell J, Gilbert WM, Nicolaides KH, Campbell S (August 1987). "Ultrasound screening for spina bifida: cranial and cerebellar ...
About 60% will be in the posterior cranial fossa (particularly the cerebellum). One review estimated 52% in the posterior fossa ... Since many of the tumors occur in the posterior fossa, they present like other posterior fossa tumors, often with headache, ... are located in the posterior fossa or cerebellar area. The ASCO study showed 52% posterior fossa; 39% sPNET; 5% pineal; 2% ... Taylor MD, Gokgoz N, Andrulis IL, Mainprize TG, Drake JM, Rutka JT (April 2000). "Familial posterior fossa brain tumors of ...
... is a groove in the posterior cranial fossa. It starts at lateral parts of occipital bone, curves ... around jugular process, and ends at posterior inferior angle of parietal bone. After that, groove for sigmoid sinus continues ...
... the roof of orbits in the anterior cranial fossa, and the areas between the mastoid and dural sinuses in the posterior cranial ... The middle cranial fossa, a depression at the base of the cranial cavity forms the thinnest part of the skull and is thus the ... "Growing skull fracture of the posterior cranial fossa and of the orbital roof". Acta Neurochir (Wien). 145 (3): 201-8, ... A cranial burst skull fracture, usually occurring with severe injuries in infants less than 1 year of age, is a closed, ...
The inner surface of the occipital bone forms the base of the posterior cranial fossa. The foramen magnum is a large hole ... Like the other cranial bones, it is classed as a flat bone. Due to its many attachments and features, the occipital bone is ... The basion is the most anterior point of the opening and the opisthion is the point on the opposite posterior part. The basion ... The occipital bone (/ˌɒkˈsɪpɪtəl/) is a cranial dermal bone and the main bone of the occiput (back and lower part of the skull ...
They also occur in the posterior cranial fossa, and near the falx cerebri and tentorium cerebelli. Unlike epidural hematomas, ...
... the small posterior space- the posterior cranial fossa contains the cerebellum, the pons, and the medulla. Clinical Anatomical ... The larger anterior space includes the anterior and middle cranial fossas and lodges the cerebrum; ... The tentorium cerebelli divides the cranial cavity into two closed spaces which communicate with each other through the ...
... s are divided into anterior fossa, middle fossa and posterior fossa fractures. Facial fractures often ... Surgery may be performed to seal a CSF leak that does not stop, to relieve pressure on a cranial nerve or repair injury to a ... Due to the proximity of the cranial nerves, injury to those nerves may occur. This can cause loss of function of the facial ... Serious cases usually result in death Basilar skull fractures include breaks in the posterior skull base or anterior skull base ...
The tumor destroys the mastoid air spaces and extends into the middle ear and/or posterior cranial fossa. The microscopic ... The tumor involves the endolymphatic sac, a portion of the intraosseous inner ear of the posterior petrous bone. Heffner DK ( ...
Walter Dandy in 1925 was an advocate of partial sectioning of the nerve in the posterior cranial fossa. During this procedure ... along with other cranial nerve neuralgias) a pain syndrome characterized by severe episodes of intense facial pain, and ...
Meningeal branch: supplies the dura mater in the posterior cranial fossa Descending branches: This is the largest branch. It ... Its path is below the posterior belly of digastric to the occipital region. This artery supplies blood to the back of the scalp ... At its origin, it is covered by the posterior belly of the digastricus and the stylohyoideus, and the hypoglossal nerve winds ... It then changes its course and runs vertically upward, pierces the fascia connecting the cranial attachment of the trapezius ...
Neoplasms and giant aneurysms of the posterior fossa have also been associated with the midbrain syndrome. Vertical ... Diagnosis can be made via combination of physical exam, particularly deficits of the relevant cranial nerves. Confirmation can ... origin of cranial nerve III) and Edinger-Westphal nuclei, causing dysfunction to the motor function of the eye. Classically, it ...
From the brain stem, the motor and sensory parts of the facial nerve join together and traverse the posterior cranial fossa ... The intermediate nerve reaches the posterior cranial fossa via the internal acoustic meatus before synapsing in the solitary ... It arises from the brainstem from an area posterior to the cranial nerve VI (abducens nerve) and anterior to cranial nerve VIII ... The facial nerve, also known as the seventh cranial nerve, cranial nerve VII, or simply CN VII, is a cranial nerve that emerges ...
Shoja MM, Tubbs RS, Khaki AA, Shokouhi G. A rare variation of the posterior cranial fossa: duplicated falx cerebelli, occipital ... Shoja MM, Tubbs RS, Khaki AA, Shokouhi G. A rare variation of the posterior cranial fossa: duplicated falx cerebelli, occipital ... A complex dural-venous variation in the posterior cranial fossa: a triplicate falx cerebelli and an aberrant venous sinus. ... A triple dural-venous variation in the posterior cranial fossa: A duplicated plus accessory falx cerebelli and an aberrant ...
... cochlear aqueduct connects the Perilymphatic space of the inner ear with the subarachnoid space of the posterior cranial fossa ... The cranial bones fuse by the end of the third year of life. For head enlargement to occur, hydrocephalus must occur before ... Since the skull bones have not yet firmly joined, bulging, firm anterior and posterior fontanelles may be present even when the ...
... s most often occur in the posterior cranial fossa, in contrast with adult ependymomas which usually occur ... U-King-Im, JM; Taylor, MD; Raybaud, C (2010). "Posterior fossa ependymomas: New radiological classification with surgical ... Tumors that occur in the posterior fossa have also been shown to have a less favorable prognosis. Expression of TERT in ... posterior fossa), intracranial supratentorial, and spinal ependymoma, and subependymomas. Reports have shown that location- ...
In the case of epidural hematoma in the posterior cranial fossa, tonsillar herniation causes Cushing's triad: hypertension, ... In children, however, they occur with similar frequency in the occipital, frontal, and posterior fossa regions. Epidural bleeds ... The eye will be positioned down and out due to unopposed innervation of the fourth and sixth cranial nerves.[citation needed] ... As blood accumulates, it starts to compress intracranial structures, which may impinge on the third cranial nerve, causing a ...
... middle and posterior cranial fossae changes rapidly. The anterior cranial fossa changes especially during the first trimester ... These cranial measurements are the basis of what is known as craniology. These cranial measurements were also used to draw a ... "Clinical anatomy of the human anterior cranial fossa during the prenatal period". Folia Morphologica. 62 (3): 271-3. PMID ... forms the protective cranial cavity that surrounds and houses the brain and brainstem. The upper areas of the cranial bones ...
... or surgery or radiation to treat posterior cranial fossa tumors. With the VMH disabled and no longer responding to peripheral ...
Neuroradiological diagnostics evaluate the severity of crowding of the neural structures within the posterior cranial fossa and ... In normal adults, the posterior fossa comprises 27% of the total intracranial space, while in adults with Chiari Type I, it is ... Tubbs RS, Elton S, Grabb P, Dockery SE, Bartolucci AA, Oakes WJ (May 2001). "Analysis of the posterior fossa in children with ... These modifications resulted in significant reduction of the size of the posterior fossa in modern humans. ...
... injured by ongoing treatment for acute lymphoblastic leukemia or surgery or radiation to treat posterior cranial fossa tumors. ... Retrieved 17 June 2013.{{cite journal}}: CS1 maint: location (link) Lygidakis NJ (March 1984). "Posterior truncal vagotomy and ...
Care is given to prevent spilling dye into the posterior cranial fossa (back of the head) or to enter the cranial cavity in ... With metrizamide the issue is that if entering the cranial cavity and high dose exposure to the blood brain barrier, side ...
The vertebral artery supplies a number of vital structures in the posterior cranial fossa, such as the brainstem, the ... The vertebral artery supplies the part of the brain that lies in the posterior fossa of the skull, and this type of stroke is ... therefore called a posterior circulation infarct. Problems may include difficulty speaking or swallowing (lateral medullary ...
The neuron cell bodies reside within the superior ganglion and innervate the dura mater in the posterior cranial fossa of the ... Keller, Jeffrey T.; Saunders, Mary C.; Beduk, Altay; Jollis, James G. (1985-01-01). "Innervation of the posterior fossa dura of ... Kemp, William J.; Tubbs, R. Shane; Cohen-Gadol, Aaron A. (2012-11-01). "The Innervation of the Cranial Dura Mater: ...
The superior ganglion contains neurons which innervate some of the dura mater lining the posterior cranial fossa via the ... Keller JT, Saunders MC, Beduk A, Jollis JG (January 1985). "Innervation of the posterior fossa dura of the cat". Brain Research ... Kemp WJ, Tubbs RS, Cohen-Gadol AA (November 2012). "The innervation of the cranial dura mater: neurosurgical case correlates ... often by the posterior inferior cerebellar artery). The affected neurons are found in the superior ganglion and innervate the ...
... where the latter is located inside the posterior cranial fossa. The carotid canal is separated from middle ear and inner ear by ... The carotid canal is located within the middle cranial fossa, at the petrous part of the temporal bone. Anteriorly, it is ... is a passageway in the temporal bone of the skull through which the internal carotid artery enters the middle cranial fossa ... limited by posterior margin of the greater wing of sphenoid bone. Posteromedially, it is limited by basilar part of occipital ...
It is located inside the posterior cranial fossa of the skull, near the center of the posterior surface of the petrous part of ... is a canal within the petrous part of the temporal bone of the skull between the posterior cranial fossa and the inner ear. The ... posterior superior - superior vestibular area (contains superior division of vestibular nerve) posterior inferior - inferior ... then divides the upper passage into anterior and posterior sections. Although there are three osseous canals, the fundus is ...
... photophobia can sometimes precede the clinical diagnosis by years Subarachnoid haemorrhage Tumor of the posterior cranial fossa ...
... posterior fossa, and subtemporal and sub frontal regions. However, patients with pacemakers, metallic implants, or other metal ... CT scans can show brain bleeds, fractures of the skull, fluid build up in the brain that will lead to increased cranial ... The symptoms of Wernicke's aphasia are caused by damage to the posterior section of the superior temporal gyrus. Damage to the ... Broca's aphasia is indicative of damage to the posterior inferior frontal gyrus of the brain. An impairment following damage to ...
Posterior · Glossoepiglottic folds · Lingual septum ... করোটীয় স্নায়ু (Cranial nerve). *সুষুম্নীয় স্নায়ু (Spinal ...
Alexandru D, Satyadev R, So W «Neurothekeoma in the posterior fossa: case report and literature review» (en anglès). Perm J, ... II parell cranial Nervi òptic Sensitiu Visió III parell cranial Nervi motor ocular comú Mixt (principalment motor) Moviment ... IV parell cranial Nervi patètic Mixt (principalment motor) Moviment globus ocular V parell cranial Nervi trigemin Mixt ... XII parell cranial Nervi hipoglòs Mixt (principalment motor) Innervació musculatura lingual El parell cranial XIII, nervi ...
... middle and posterior cranial fossae changes rapidly. The anterior cranial fossa changes especially during the first trimester ... These cranial measurements are the basis of what is known as craniology. These cranial measurements were also used to draw a ... "Clinical anatomy of the human anterior cranial fossa during the prenatal period". Folia Morphologica. 62 (3): 271-3. PMID ... forms the protective cranial cavity that surrounds and houses the brain and brainstem.[6] The upper areas of the cranial bones ...
Animation Posterior cranial fossa at human fetus Base of skull Posterior cranial fossa Posterior cranial fossa A tumor of the ... Anterior cranial fossa Middle cranial fossa Wikimedia Commons has media related to Posterior cranial fossa. Anatomy photo:22:os ... The posterior cranial fossa is part of the cranial cavity, located between the foramen magnum and tentorium cerebelli. It ... Lies in the anterior wall of the posterior cranial fossa. It transmits the facial (VII) and vestibulocochlear (VIII) cranial ...
... and the humeral entepicondyle is ridge-like with anterior and posterior depressions; and the posterior border of the ilial ... This cranial specialization is unusual among dinosaurs but has evolved independently in some lizards. The rear of the lower jaw ... Novas found that the primitive features of lacking a brevis fossa and having only two sacral vertebrae were simply reversals ... An extensive study of Herrerasaurus by Sereno in 1992 suggested that of these proposed synapomorphies, only one cranial and ...
... and possibly lower cranial nerve (IX, X, XI, XII) deficits, tetraparesis or abnormal breathing. Among these, cranial nerve ... are closer together than their posterior, and encroach on the basilar portion of the bone; the posterior extremities extend ... Atlas Condyloid fossa Watts E (January 2020). "Occipital Condyle Fractures". Ortho Bullets. Lineage Medical, Inc. Retrieved 22 ... Surgery may become necessary if there is significant compression of the brainstem, spinal cord, the lower cranial nerves or ...
This can be surgically removed through the middle cranial fossa. The infratemporal fossa can also be used to approach other ... Finally, the mylohyoid groove descends obliquely transmitting the mylohyoid nerve the only motor branch of the posterior ... The infratemporal fossa can be imaged using a CT scan. Infratemporal fossa Infratemporal fossa. Lingual and inferior alveolar ... enters infratemporal fossa from the middle cranial fossa through the foramen ovale of the sphenoid bone. The mandibular nerve ...
J.H. Shin, H.K. Lee, A.K. Jeong, S.H. Park, C.G. Choi, D.C. Suh, Choroid plexus papilloma in the posterior cranial fossa: MR, ... S.J. Pawar, R.R. Sharma, A.K. Mahapatra, S.D. Lad, M.M. Musa, Choroid plexus papilloma of the posterior third ventricle during ... Macrocephaly, splayed cranial sutures, fontanel widening/bulging, and forced downward look, often known as sunset eyes, are ... A. Mishra, B.K. Ojha, A. Chandra, S.K. Singh, N. Chandra, C. Srivastava, Choroid plexus papilloma of posterior third ventricle ...
The posterior centrodiapophyseal lamina of the cervicals showed serial variation, bifurcating and reuniting down the neck, a ... Welles did not find evidence of cranial kinesis in the skull of Dilophosaurus, a feature that allows individual bones of the ... The arches of the cervical vertebrae also had pneumatic fossae (or chonoses), conical recesses so large that the bones ... They suggested that the cranial crests of Cryolophosaurus and Sinosaurus had either evolved convergently, or were a feature ...
a posterior, which runs backward above the external acoustic meatus and is continuous with the supramastoid crest. The upper ... The zygomatic process of the temporal arises by two roots: an anterior, directed inward in front of the mandibular fossa, where ... "In vivo strain in cranial sutures: The zygomatic arch". Journal of Morphology. 207 (3): 225-239. doi:10.1002/jmor.1052070302. ...
... posterior rim of nares behind anterior rim of antorbital fenestra Infranasal recess is present Reduced antorbital fossa Convex ... A more recent analysis on available post-cranial bones has provided results that further support the idea of Nicrosaurus being ... and posterior process): angular Length of posterior process of squamosal: moderate Lateral flange of the squamosal is absent ... Long snout Ventrally convex alveolar rim of maxilla Tripartite upper dentition Posterior rim of nares behind anterior rim of ...
A depression above the snout has been termed the "nasal fossa" or "sulcus". A similar fossa is also seen in Tianyulong, ... Eleven tall and chisel-like cheek-teeth lined each side of the posterior parts of the upper jaw, which were separated from the ... ISBN 978-0-375-82419-7. Butler, Richard J; Porro, Laura B; Galton, Peter M; Chiappe, Luis M (2012). "Anatomy and Cranial ... Ventrally, the antorbital fossa was bounded by a prominent bony ridge, to which the animal's fleshy cheek would have been ...
Poland anomaly Posterior fossa malformations-hemangiomas-arterial anomalies-cardiac defects-eye abnormalities-sternal cleft and ... cranial arteritis, Horton's disease) Thromboangiitis obliterans (Buerger's disease) Thrombotic thrombocytopenic purpura ( ... posterior pigmented pruritic patch, subscapular pruritus) Postencephalitic trophic ulcer Psychogenic pruritus Riley-Day ... skin fossa) Superficial lymphatic malformation (lymphangioma circumscriptum) Supernumerary nipple (accessory nipple, ...
Likewise, a cranial narrowing behind the orbits was only rather weakly pronounced. In lateral view, the frontal line showed a ... The anterior palatal window was at the level of the canine, and the largest posterior one was at the level of the third ... As a diagnostic feature, the glenoid fossa was on a raised platform, more prominent than in Amphimachairodus, and was very wide ... Overall, the tooth appeared elongated at a length of just under 2 cm, as did the much larger posterior premolar, which grew to ...
... of the middle cranial fossa The contour of the cribriform plate Details in the trabecular system in the anterior cranial fossa ... Posterior Arc - Arc of a circle between anterior cranial base and mandibular base with O as centre and OSp as radius. Basal Arc ... "The cranial base: The postnatal development of the cranial base studied histologically on human autopsy material". American ... The point O is located in the posterior cranial base. This method categorized the vertical and the horizontal relationship and ...
Based on the morphology of both cranial and post-cranial elements discovered (see below), Ventastega is more primitive than ... The maxilla is long and low, and unlike some fish, the posterior third of the maxilla is the lowest part of the bone. The teeth ... along with the basipterygoid processes and laterally open post-temporal fossae. The clavicle has a broad ventral blade with a ... This, combined with other cranial and post-cranial elements of Ventastega, made researchers predict that it was larger than ...
The oculomotor nerve, also known as the third cranial nerve, cranial nerve III, or simply CN III, is a cranial nerve that ... It passes between the superior cerebellar (below) and posterior cerebral arteries (above), and then pierces the dura mater ... a groove on the lateral wall of the interpeduncular fossa). On emerging from the brainstem, the nerve is invested with a sheath ... Cranial nerves III, IV, and VI are usually tested together as part of the cranial nerve examination. The examiner typically ...
Individuals whose cancer has spread to an area of the brain known as the posterior fossa have a greater risk of developing a ... Third, there may be a pattern of nodular deposits of tumor on cranial and spinal nerve roots, frequently without tumor cells ... These cells have the ability to penetrate the pial membrane and invade the spinal cord and cranial nerves. Infiltration from ... Other symptoms that are less common cranial nerve abnormalities, spinal symptoms such as limb weakness and paresthesia, and ...
The posterior tubercles may provide a link to the digastricus muscle which helps to open the jaws. Hippos, which have a ... The wide and tall temporal fossa allowed for a very large temporalis muscle, which extends from the side of the cranium to the ... and develop robust cranial bars to resist the resulting forces on the skull. The pterygoideus muscle, which follows a similar ... Generally, the posterior (rear) mandibular tubercles develop later in life than the anterior (front) pair, and none of the ...
... the tonsillar fossa, uvula and posterior pharyngeal wall. Stimuli from the receptors of this phase then provoke the pharyngeal ... This phase is voluntary and involves important cranial nerves: V (trigeminal), VII (facial) and XII (hypoglossal). For the ... In order for anterior to posterior transit of the bolus to occur, orbicularis oris contracts and adducts the lips to form a ... There is also the simultaneous approximation of the walls of the pharynx to the posterior free border of the soft palate, which ...
The cranial portion of the loop moves to the right and the caudal portion of the loop moves toward the left. This rotation ... The mesentery is an organ that attaches the intestines to the posterior abdominal wall in humans and is formed by the double ... aspect of the peritoneum overlying the mobile component of the mesosigmoid and the parietal peritoneum in the left iliac fossa ... The cranial portion of the loop will develop into the jejunum and most of the ileum, while the caudal part of the loop ...
... posterior column-medial lemniscus tract posterior commissure posterior communicating artery posterior cranial fossa posterior ... coxae cranial cranial autonomic ganglia cranial bone cranial nerve ganglia cranial nerve lesion cranial nerve nuclei cranial ... posterior inferior cerebellar artery posterior lobe of the cerebellum posterior nasal artery posterior septal artery posterior ... posterior atlantooccipital membrane posterior auricular artery posterior cerebral artery Posterior chamber of eyeball posterior ...
A. peavoti is also found to have a wider and more upright scapula blade compared to A. bainii, with deeper fossa on the ... While both species share some similar post-cranial features, there are numerous differences in the shapes of various girdle and ... Two autamorphies used to define Geikiidae include (1) the posterior portion of the zygomatic arch thickened and/or downturned ... Diagnostic features of Aulacephalodon include (1) the size of their nasal bosses, (2) the shape and articulation of cranial ...
The nuclei of two pairs of cranial nerves are similarly located at the ventral side of the periaqueductal grey - the pair of ... The lateral part of the midbrain is supplied by the posterior cerebral artery. During embryonic development, the midbrain (also ... Beyond the midbrain, between the lobes, is the interpeduncular fossa, which is a cistern filled with cerebrospinal fluid[ ... the trochlear is the only cranial nerve to exit the brainstem dorsally. The Edinger-Westphal nucleus (which controls the shape ...
Animation Posterior cranial fossa at human fetus Base of skull Posterior cranial fossa Posterior cranial fossa A tumor of the ... Anterior cranial fossa Middle cranial fossa Wikimedia Commons has media related to Posterior cranial fossa. Anatomy photo:22:os ... The posterior cranial fossa is part of the cranial cavity, located between the foramen magnum and tentorium cerebelli. It ... Lies in the anterior wall of the posterior cranial fossa. It transmits the facial (VII) and vestibulocochlear (VIII) cranial ...
Occipital Intradiploic Pseudomeningocele - A Rare Complication of Pediatric Posterior Cranial Fossa Surgery: Case Report and ... Conclusion: Pediatric patients undergoing posterior cranial fossa craniotomy/craniectomy may postoperatively develop OIP. In ... 2022). Occipital Intradiploic Pseudomeningocele - A Rare Complication of Pediatric Posterior Cranial Fossa Surgery: Case Report ... Conclusion: Pediatric patients undergoing posterior cranial fossa craniotomy/craniectomy may postoperatively develop OIP. In ...
... dle cranial fossa and lateral suboccipital approaches in 50 patients with posterior fossa lesions such as tumors and vascular ... dle cranial fossa and lateral suboccipital approaches in 50 patients with posterior fossa lesions such as tumors and vascular ... dle cranial fossa and lateral suboccipital approaches in 50 patients with posterior fossa lesions such as tumors and vascular ... dle cranial fossa and lateral suboccipital approaches in 50 patients with posterior fossa lesions such as tumors and vascular ...
Cheepsattayakorn R, Tantachamroon T. Cysticercosis in the posterior cranial fossa. Journal of the Medical Association of ... Computed brain tomography showed a posterior fossa cyst with obstructive hydrocephalus. The cyst and the tissues from CP angle ...
Posterior view of contents of the posterior cranial fossa and spinal canal. Removal of occipital bone and laminectomy of the ... Posterior view of contents of the posterior cranial fossa and spinal canal. Removal of occipital bone and laminectomy of the ... Posterior View of Contents of the Posterior Cranial Fossa and Spinal Canal. 6703 ... Longitudinally directed posterior spinal arteries supply the posterior one-third of the spinal cord (the anterior spinal artery ...
Posterior fossa tumor is a type of brain tumor located in or near the bottom of the skull. ... Symptoms from posterior fossa tumors also occur when the tumor damages local structures, such as the cranial nerves. Symptoms ... The best way to look at the posterior fossa is with an MRI scan. CT scans are not helpful to see that area of the brain in most ... The posterior fossa is a small space in the skull, found near the brainstem and cerebellum. The cerebellum is the part of the ...
... localized to the clivus and anterior region of the posterior cranial fossa (65 men and 75 women). The age of patients ranged ... including central tumors of the anterior region of the posterior cranial fossa. From 2008 to the present time, the inpatient ... and lower neurovascular complexes of the posterior cranial fossa. The chordoma cases were distributed as follows according to ... endonasal transclival approach can be used to obtain access to the centrally located tumors of the posterior cranial fossa. It ...
... it often includes lesions of cranial nerve VIII as well. ... Posterior cranial fossa tumors in young adults. Laryngoscope. ... yet it often expands into the posterior fossa with secondary effects on other cranial nerves and the brain stem. ... MRI is preferred over CT scan for imaging lesions in the posterior fossa. ... The posterior inferior cerebellar artery branches from the vertebral artery, while the anterior inferior cerebellar artery and ...
Cystic lesion of posterior cranial fossa: is it Dandy-Walker?. *S. Nardi, C. Porcu, +4 authors. L. Saba ... This review assesses the cystic lesions of posterior cranial fossa on the basis of embryological development, radiological ...
... any viable brain can be pushed back up into the middle cranial fossa. If the defect is large, intradural and extradural repair ... Removal of the lateral and posterior walls of the epitympanum such that the tegmen mastoideum and tegmen tympani become a ... Lowering of the posterior bony external auditory wall to the level of the facial nerve ... The epitympanum is progressively enlarged, and the posterior canal wall is removed from the inside out. Bone removal is limited ...
Adjunctive use of endoscopy during posterior fossa surgery to treat cranial neuropathies. King WA, Wackym PA, Sen C, Meyer GA, ...
Middle cranial fossa 3 . Branch of posterior cerebral artery 4 . Trochlear nerve (IV) ... Rhomboid fossa. The choroid plexus and tela chorioidea have been removed to expose the entire left half of the fourth ventricle ... Rhomboid fossa. Image #3-7. KEYWORDS: Brain, Medulla, Midbrain, Peripheral nervous system, Ventricules. ...
Posterior Cranial Fossa 15% * Hematoma 14% * Pilocytic Astrocytoma 14% * Cryopyrin 14% * Meningoencephalitis 14% ...
3D MPRAGE evaluation of lesions in the posterior cranial fossa. Magn Reson Imaging 1994;12:553-58. ... Improved Lesion Conspicuity with Contrast-Enhanced 3D T1 TSE Black-Blood Imaging in Cranial Neuritis: A Comparative Study of ...
It can be subdivided into three regions: the anterior, middle, and posterior cranial fossae. The most important anatomic ... This part of the skull base is aberrant to other regions of the cranial skeleton as it displays a unique configuration of an ... osseous cranial vault with depressions, ridges, and septa. The anterior skull base stretches between the posterior wall of the ... The skull base forms the floor of the cranial cavity and separates the brain from other facial structures. ...
A retrosigmoid craniotomy was performed with total removal and cranial nerve functions preservation. Histology revealed a ... Posterior fossa lesions may present with behavioural changes and/or progressive neurological deficit. Patients may have ... Giant posterior fossa meningioma: the importance of early diagnosis and challenges concerning treatment ... Giant posterior fossa meningioma: the importance of early diagnosis and challenges concerning treatment ...
Comparison of Diffusion-Weighted MRI Reconstruction Methods for Visualization of Cranial Nerves in Posterior Fossa Surgery. ... Images from 10 patients with posterior fossa tumors (4 male, mean age: 63.5), affecting either the trigeminal nerve (CN V) or ... XST offers the best combination of anatomical accuracy and speed of reconstruction of cranial nerves within this patient ... While TN is caused by neurovascular compression of the fifth cranial nerve (CN V), how MS-related demyelination correlates with ...
3. Posterior cerebral fossa - contains medulla oblongata, pons, cerebellum, and the 5th to 12th cranial nerves. ... 2. Middle cranial fossa - contains pituitary gland, optic nerves and optic chiasma, temporal cerebral lobes, cranial nerves 3 ... B. Skull - Cranial Bones - 8 bones house brain, cranial nerves and cranial blood vessels; dipl e construction.. ... A. Skull - Cranial fossae of the cranial cavity.. http://ect.downstate.edu/courseware/haonline/labs/l22/os0803.htm ...
1. Anterior cranial fossa 2. Middle cranial fossa 3. Posterior cranial fossa ...
posterior cranial fossa meningioma DOID:4211 * brainstem intraparenchymal clear cell meningioma DOID:4209 ...
Posterior Cranial Fossa Medicine & Life Sciences 13% * Blood Vessels Medicine & Life Sciences 11% ...
The two prevalent hypotheses put forth so far include altered cerebrospinal fluid flow in the posterior cranial fossa, and ... include altered cerebrospinal fluid flow in the posterior cranial fossa, and involvement of the abducens nucleus or ...
The nerve may also be injured by diseases of the posterior fossa or skull base. Clinical manifestations include unilateral ... Diseases of the twelfth cranial (hypoglossal) nerve or nuclei. The nuclei and fascicles of the nerve are located in the medulla ...
It consists in an osteo-dural decompression of the posterior fossa. Surgical decision is formal when at least one of the ... Brainstem compression signs and symptoms (central apneas syndrome, tetraparesis, paresthesia, cranial nerves disfunction...). ... due to a congenital small posterior fossa, which represent our focus of interest. Chiari malformation may leads to direct ...
Posterior cranial fossa; Brain Stem; Cerebellar Vermis; Cerebellum; Cranial Fossa, Posterior; Diagnosis, Differential; Female; ... The assessments included the BVA, clival-supraoccipital angle, transverse diameter of the posterior cranial fossa, tentorial ... The assessments included the BVA, clival-supraoccipital angle, transverse diameter of the posterior cranial fossa, tentorial ...
A 21-week fetal ultrasound of a nonspecific brain mass was confirmed with fetal MRI as a 2.7-cm T1-hyperintense posterior fossa ... Although a large flow void in the left middle cranial fossa was present, postnatal computed tomography angiography ultimately ... Cranial lesions were multiple osteolytic lesions associated with abscesses in the cranial bones. The patient initially received ... The middle fossa approach is an effective option for the treatment of small (Koos grade I and II) vestibular schwannomas (VSs) ...
... is characterized by a shallow posterior fossa and hindbrain herniation through the foramen magnum. Posterior fossa ... a morphometric study of the posterior cranial fossa. J Neurosurg. 1997;86:40-47. 2. Lazareff J, Galarza M, Gravori T, Spinks T ... is characterized by a shallow posterior fossa and hindbrain herniation through the foramen magnum. Posterior fossa ... Posterior fossa decompression and reconstruction in adolescents and adults with the Chiari I malformation. Neurol Res. 2011;33: ...
  • Symptoms from posterior fossa tumors also occur when the tumor damages local structures, such as the cranial nerves. (medlineplus.gov)
  • An acoustic neuroma develops within the eighth cranial nerve, usually within the course of the internal auditory canal, yet it often expands into the posterior fossa with secondary effects on other cranial nerves and the brain stem. (medscape.com)
  • If untreated, an acoustic neuroma may expand into the cerebellopontine angle and compress facial and other cranial nerves. (medscape.com)
  • In 11 cases, intraoperative monitoring of the cranial nerves was performed (21 cranial nerves were identified). (biomedcentral.com)
  • Surgical interventions involving the clivus, as well as other areas of the base of the skull, are associated with a number of limiting factors: significant depth of the surgical wound with a complex anatomical environment, including the major blood vessels and cranial nerves, and the effect of the tumor on the structures of the brain stem. (biomedcentral.com)
  • 2. Middle cranial fossa - contains pituitary gland, optic nerves and optic chiasma, temporal cerebral lobes, cranial nerves 3 and 4. (cuny.edu)
  • 3. Posterior cerebral fossa - contains medulla oblongata, pons, cerebellum, and the 5th to 12th cranial nerves. (cuny.edu)
  • Thus possible sources of cervicogenic headache are: atlanto-occipital joint, median and lateral atlanto-axial joints, C2-3 intervertebral disc, C2-3 zygapophysial joint, upper posterior neck and paravertebral muscles, the trapezius and the sternocleidomastoid muscles, spinal and posterior cranial fossa dura matter, cervical spinal nerves and roots, and the vertebral artery. (asra.com)
  • Background: Surgical treatment of recurrent, posterior cranial fossa epidermoids in multioperated patients carries significant morbidity, mainly due to tumor adhesion to cranial nerves and vessels, and brainstem involvement. (elsevier.com)
  • Clinical signs are often nonspecific, and imaging is a critical step in evaluating the pediatric orbit, optic pathway, and cranial nerves that supply the orbital contents. (radiologykey.com)
  • High-resolution 3-T MR imaging helps characterize orbital and ocular soft-tissue lesions, permitting superior delineation of orbital soft tissues, cranial nerves, blood vessels, and blood flow and detection of intracranial extension of orbital disease. (radiologykey.com)
  • The ophthalmic artery and vein and cranial nerves enter the intraconal space through the annulus of Zinn. (radiologykey.com)
  • Cognitive function has not been well studied after neurosurgery for posterior fossa lesions despite its potential importance in determining surgical indications and approaches. (elsevier.com)
  • The present study evaluated changes in cognitive functions after posterior fossa surgery to detect any differences between the mid- dle cranial fossa and lateral suboccipital approaches in 50 patients with posterior fossa lesions such as tumors and vascular diseases. (elsevier.com)
  • In clinical practice, it often includes lesions of cranial nerve VIII as well. (medscape.com)
  • This review assesses the cystic lesions of posterior cranial fossa on the basis of embryological development, radiological findings and associated clinical aspects, in order to clarify the radiological differential diagnosis through embryology. (semanticscholar.org)
  • Posterior fossa lesions may present with behavioural changes and/or progressive neurological deficit. (bmj.com)
  • The authors herein present a 48-year-old male patient with disseminated MAC infectious lesions in the lungs and on the cranial, vertebral, femoral, and pelvic bones, a normal CD4 count, and immunopositivity for the interferon-ɤ (IFN-ɤ) neutralization antibody. (thejns.org)
  • Cranial lesions were multiple osteolytic lesions associated with abscesses in the cranial bones. (thejns.org)
  • however, cranial lesions worsened. (thejns.org)
  • Therefore, multiple cranial lesions were removed via osteoplastic craniectomy and the postoperative course was uneventful. (thejns.org)
  • Posterior fossa tumor is a type of brain tumor located in or near the bottom of the skull. (medlineplus.gov)
  • If a tumor grows in the area of the posterior fossa, it can block the flow of spinal fluid and cause increased pressure on the brain and spinal cord. (medlineplus.gov)
  • There is limited space in the posterior fossa, and the tumor can easily press on delicate structures if it grows. (medlineplus.gov)
  • Headaches and focal neurologic findings in patients previously treated for cranial neoplasm raise concerns about recurrent tumor. (neurology.org)
  • We describe three such patients whose symptoms began years after treatment with cranial irradiation and in whom extensive evaluations ruled out tumor recurrence but suggested an unusual complication. (neurology.org)
  • He was treated with cranial irradiation (5,580 cGy to the tumor given as 4,140 cGy whole-brain radiation therapy and 1,440 cGy boost to the tumor volume) and chemotherapy. (neurology.org)
  • The following applications are illustrated and discussed: 1) intraoperative monitoring of auditory function during posterior fossa tumor resection, 2) auditory brain stem response and VIIIth nerve monitoring during retrolabyrinthine vestibular nerve section, 3) monitoring of auditory function during microvascular decompression of cranial nerve VII, VIII, or IX, and 4) special applications related to cochlear implant surgery. (elsevier.com)
  • Two women who suffered from facial nerve paralysis following surgical resection of a posterior fossa tumor were instructed by an expert beautician in the application of make-up to correct their facial imbalances. (elsevier.com)
  • Most tumors of the posterior fossa are primary brain cancers. (medlineplus.gov)
  • Posterior fossa tumors have no known causes or risk factors. (medlineplus.gov)
  • Most tumors of the posterior fossa are removed with surgery, even if they are not cancerous. (medlineplus.gov)
  • Acoustic neuromas are Schwann cell tumors that usually originate on the vestibular division of the eighth cranial nerve in the proximal internal auditory canal. (medscape.com)
  • Until recently, tumors of the clivus and the anterior region of the posterior cranial fossa were considered extremely difficult to access and often inoperable using standard transcranial approaches. (biomedcentral.com)
  • With the introduction into the neurosurgical practice of minimally invasive methods utilizing endoscopic techniques, it became possible to effectively remove hard-to-reach tumors, including central tumors of the anterior region of the posterior cranial fossa. (biomedcentral.com)
  • From 2008 to the present time, the inpatient institution has operated on 140 patients with various tumors of the base of the skull, localized to the clivus and anterior region of the posterior cranial fossa (65 men and 75 women). (biomedcentral.com)
  • The endoscopic endonasal transclival approach can be used to obtain access to the centrally located tumors of the posterior cranial fossa. (biomedcentral.com)
  • The extended endoscopic endonasal posterior (transclival) approach, considering its minimally invasive nature, allows fora radical and low-risk (in terms of postoperative complications and lethality) removal of various skull base tumors of central localization with the involvement and without the involvement of the clivus, which, until recently, were considered to be almost inoperable. (biomedcentral.com)
  • A. Skull - Cranial fossae of the cranial cavity. (cuny.edu)
  • The cranial cavity revealed a good preservation of the menynx (Fig. 2A, riangle) and brain residuals in the posterior cerebral fossa (Fig. 2A, arrow). (paleopatologia.it)
  • The posterior inferior cerebellar arteries, the largest branches of the vertebral arteries, can be seen proximal to the foramen magnum. (neurosurgicalatlas.com)
  • Chiari-I Malformation (CM-I) is characterized by a shallow posterior fossa and hindbrain herniation through the foramen magnum. (cns.org)
  • In the illustration below, used to more clearly define the talking point that the cerebellar tonsils are caudal or inferior to a line drawn from the basion or most anterior (front) point of the foramen magnum to the opisthion or the posterior (back) point of the foramen magnum, known as the basion opisthion line or McRae's line. (caringmedical.com)
  • The first cervical nerve, the suboccipital nerve, emerges between the skull and the posterior arch of the first cervical vertebra (atlas). (neurosurgicalatlas.com)
  • It surrounded by the posterior cranial fossa, the middle cranial fossa, the canal of the facial nerve, the sigmoid and lateral sinuses, and the petrous tip of the temporal bone. (medscape.com)
  • A retrosigmoid craniotomy was performed with total removal and cranial nerve function's preservation. (bmj.com)
  • Diseases of the twelfth cranial (hypoglossal) nerve or nuclei. (harvard.edu)
  • The nerve may also be injured by diseases of the posterior fossa or skull base. (harvard.edu)
  • The post-operative period was uneventful, except that he required tracheostomy because of lower cranial nerve paresis and was discharged under satisfactory conditions after 3 weeks of hospital stay. (neurologyindia.com)
  • 2022). Occipital Intradiploic Pseudomeningocele - A Rare Complication of Pediatric Posterior Cranial Fossa Surgery: Case Report and Review of the Literature. (unimib.it)
  • Está formado por la superficie superior del tercio posterior del cuerpo del ESFENOIDES, por el occipital, por las porciones petrosa y mastoidea del HUESO TEMPORAL y por el ángulo posteroinferior del HUESO PARIETAL. (bvsalud.org)
  • It is formed by the posterior third of the superior surface of the body of the sphenoid ( SPHENOID BONE ), by the occipital, the petrous, and mastoid portions of the TEMPORAL BONE , and the posterior inferior angle of the PARIETAL BONE . (bvsalud.org)
  • Occipital encephaloceles present as masses overlying the occiput or posterior neck. (symptoma.com)
  • The occipital artery (Figs. 759, 760, 787) arises from the posterior aspect of the external carotid artery, below the posterior belly of the digastric muscle, and terminates, near the medial end of the superior nuchal line of the occipital bone, by dividing into medial and lateral terminal branches. (co.ma)
  • The dorsal part of the ring consists of a thin cartilaginous plate, the tectum posterius, from which is developed the only part (i.e. the inferior part of the occipital squama) of the cranial vault preformed in cartilage. (co.ma)
  • On lateral radiographs the sella turcica or pituitary fossa is a radiodense saddle-shaped outline of the fossa extending between the anterior and posterior clinoid processes 1 . (bvsalud.org)
  • Twenty-five patients underwent surgery via the middle fossa and 25 via the lateral suboccipital approaches. (elsevier.com)
  • Since the introduction of lateral cephalometric radiography by Broadbent4 in 1931, this radiographic technique has been widely used in orthodontics to evaluate cranial and dentofacial growth. (bvsalud.org)
  • Conclusion: Pediatric patients undergoing posterior cranial fossa craniotomy/craniectomy may postoperatively develop OIP. (unimib.it)
  • All 23 procedures included duraplasty and resection of the posterior arch of C1. (cns.org)
  • This study aimed to elucidate the variations of en bloc resection for advanced EAC‐SCC. (elsevier.com)
  • Furthermore, en bloc resection with the temporomandibular joint or glenoid fossa increases the technical difficulty of a surgical procedure because the exposure and manipulation of the petrous segment of the internal carotid artery are limited from the middle cranial fossa. (elsevier.com)
  • The posterior fossa is a small space in the skull, found near the brainstem and cerebellum. (medlineplus.gov)
  • Neoplasms of the posterior fossa. (medlineplus.gov)
  • The authors describe three patients with prolonged but reversible episodes of severe headaches and focal neurologic deficits developing years after irradiation for cranial neoplasms. (neurology.org)
  • It consists in an osteo-dural decompression of the posterior fossa. (centerwatch.com)
  • We present a novel technique for minimally invasive decompression of the posterior fossa that provides similar outcomes as the standard PFDC in the surgical treatment of CM-I. Preservation of the posterior tension band and musculature could result in better postoperative pain control, lower incidence of craniocervical instability and better cosmetic results. (cns.org)
  • Tx: Posterior fossa decompression and duraplasty. (symptoma.com)
  • Current methods of quantifying the severity of CM, such as radiographical measurement of the depth of hindbrain herniation into the spinal canal or measurement of posterior cranial fossa volume do not necessarily correlate to the symptom severity. (asme.org)
  • In approximately two thirds of people, the basilar artery ends by bifurcating into the posterior cerebral arteries, with small posterior communicating arteries connecting to the internal carotid system in the circle of Willis. (medscape.com)
  • Historical classification of this malformation consists in four different types, but it is the first one, due to a congenital small posterior fossa, which represent our focus of interest. (centerwatch.com)
  • A smooth concentric narrowing was identified in the P2 segment of the left posterior cerebral artery, and branches off this vessel were narrowed with reduced arteriographic blush-all thought to be most consistent with radiation-induced vasculopathy ( figure B ). He has had five such events always with unrevealing evaluations and with complete resolution, sometimes over hours but on one occasion over 3 weeks. (neurology.org)
  • The trans-cranial Doppler flow characteristics of the bilateral middle cerebral artery and anterior cerebral artery are described in this report. (neurologyindia.com)
  • Herein, we report the trans-cranial Doppler flow characteristics of the bilateral middle cerebral artery (MCA) and anterior cerebral artery (ACA) in a child with PSH. (neurologyindia.com)
  • Lines dropped through a central anterior-to-posterior axis of each orbit bisect at a 45° angle. (medscape.com)
  • The frontal process of the maxillary bone, the lacrimal bone, lamina papyracea of the ethmoid bone, and the lesser wing of the sphenoid make up the medial wall from anterior to posterior. (radiologykey.com)
  • The region of the posterior cranial fossa, including the clivus and the anterior surface of the brainstem, is considered the hardest-to-access region in skull base surgery. (biomedcentral.com)
  • include altered cerebrospinal fluid flow in the posterior cranial fossa, and involvement of the abducens nucleus or infranuclear portion. (reviewofophthalmology.com)
  • g) The masseteric branch, sometimes represented by several twigs, arises from the posterior aspect of the facial trunk, a short distance above the lower margin of the mandible. (co.ma)
  • 1. Anterior cranial fossa - contains frontal cerebral lobes, olfactory bulbs and olfactory tracts. (cuny.edu)
  • The optic ring averages 6 mm from the posterior ethmoid artery, with a range of 5-11 mm. (medscape.com)
  • Posterior fossa decompressive craniectomy (PFDC) is the standard treatment for symptomatic patients. (cns.org)
  • 1. Nishikawa M, Sakamoto H, Hakuba A, Nakanishi N, Inoue Y. Pathogenesis of the Chiari malformation: a morphometric study of the posterior cranial fossa. (cns.org)
  • A third group, heavily represented by Chiari malformation, was associated with cranial surgery. (medscape.com)
  • Type I Chiari malformation (CM) is a complex disorder of the craniospinal system characterized by underdevelopment of the posterior cranial fossa and overcrowding of the normally developed hindbrain [1], and may be a precursor to more severe secondary disorders such as syringomyelia and hydrocephalus. (asme.org)
  • Computed brain tomography showed a posterior fossa cyst with obstructive hydrocephalus. (who.int)
  • Although a large flow void in the left middle cranial fossa was present, postnatal computed tomography angiography ultimately revealed a high-flow dAVF communicating with the left transverse sinus. (thejns.org)
  • His neurologic symptoms persisted, and he was hospitalized after cranial computed tomography (CT) showed a 6-cm, heterogeneous, centrally necrotic mass in the corpus callosum. (cdc.gov)
  • However, the scores of one computerized test battery and serial seven- word learning tests decreased significantly 1 month after surgery and recovered within 3 months, in- dicating temporary deterioration of short-term memory in the middle fossa group. (elsevier.com)
  • Adjunctive use of endoscopy during posterior fossa surgery to treat cranial neuropathies. (nih.gov)
  • Significant PCs were included as independent variables in multivariable logistic regression models designed to test associations with three primary outcomes: cervical spine surgery, thoracolumbar/sacral spine surgery, and cranial surgery. (medscape.com)
  • iatrogenic , related to nasal (e.g. functional endoscopic sinus surgery [FESS], endoscopic sinus surgery [ESS]) ( Fig.1 ), or cranial surgery (e.g. craniotomies), which are further divided into accidental and imperfect reconstruction. (actaitalica.it)
  • The posterior inferior cerebellar artery branches from the vertebral artery, while the anterior inferior cerebellar artery and the superior cerebellar artery branch from the basilar artery. (medscape.com)
  • How many bones make up the cranial bones and what are their functions? (freezingblue.com)
  • The frequency is higher in males between their thirties and fifties and are quite rare in childhood due to elasticity of cranial bones 6 . (actaitalica.it)
  • Furthermore, they should understand the anatomical and biomechanical implications of preserving the posterior tension band and neck musculature. (cns.org)
  • [ 1 , 2 ] The clinical triad of a short neck, low posterior hairline, and limited neck range of motion first described by Klippel and Feil in 1912 [ 3 ] was originally thought to be the hallmark presentation of this condition. (medscape.com)
  • The anterior and posterior ethmoid foramina lie in the medial wall of the orbit along the frontoethmoidal suture line. (medscape.com)
  • The anterior and posterior ethmoid arteries pass through these foramina and are important surgical landmarks. (medscape.com)
  • The distance between the anterior and posterior ethmoid arteries averages 12 mm, with a range of 8-19 mm. (medscape.com)
  • h) The buccal is an inconstant branch which, when present, arises from the posterior aspect of the external maxillary artery above the masseteric branch. (co.ma)
  • Even complete occlusion of a large artery may not result in death because of anastomotic retrograde flow via the circle of Willis and posterior communicating arteries. (medscape.com)
  • Longitudinally directed posterior spinal arteries supply the posterior one-third of the spinal cord (the anterior spinal artery supplies the anterior two-thirds). (neurosurgicalatlas.com)
  • The arteries mark the level of the cribriform plate and the relationship of the anterior cranial fossa to the orbits. (medscape.com)
  • Upper, middle, and lower transclival approaches provide access to the anterior surface of the upper, middle, and lower neurovascular complexes of the posterior cranial fossa. (biomedcentral.com)
  • The middle fossa approach and operation time showed correlations with the postoperative neu- ropsychological declines. (elsevier.com)