Cerebellopontine Angle: Junction between the cerebellum and the pons.Cerebellar Neoplasms: 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)Neuroma, Acoustic: A benign SCHWANNOMA of the eighth cranial nerve (VESTIBULOCOCHLEAR NERVE), mostly arising from the vestibular branch (VESTIBULAR NERVE) during the fifth or sixth decade of life. Clinical manifestations include HEARING LOSS; HEADACHE; VERTIGO; TINNITUS; and FACIAL PAIN. Bilateral acoustic neuromas are associated with NEUROFIBROMATOSIS 2. (From Adams et al., Principles of Neurology, 6th ed, p673)Facial Nerve Diseases: 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.Epidermal Cyst: Intradermal or subcutaneous saclike structure, the wall of which is stratified epithelium containing keratohyalin granules.Cranial Nerve Neoplasms: Benign and malignant neoplasms that arise from one or more of the twelve cranial nerves.Meningioma: A relatively common neoplasm of the CENTRAL NERVOUS SYSTEM that arises from arachnoidal cells. The majority are well differentiated vascular tumors which grow slowly and have a low potential to be invasive, although malignant subtypes occur. Meningiomas have a predilection to arise from the parasagittal region, cerebral convexity, sphenoidal ridge, olfactory groove, and SPINAL CANAL. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2056-7)Trigeminal Neuralgia: A syndrome characterized by recurrent episodes of excruciating pain lasting several seconds or longer in the sensory distribution of the TRIGEMINAL NERVE. Pain may be initiated by stimulation of trigger points on the face, lips, or gums or by movement of facial muscles or chewing. Associated conditions include MULTIPLE SCLEROSIS, vascular anomalies, ANEURYSMS, and neoplasms. (Adams et al., Principles of Neurology, 6th ed, p187)Ear Neoplasms: Tumors or cancer of any part of the hearing and equilibrium system of the body (the EXTERNAL EAR, the MIDDLE EAR, and the INNER EAR).Vestibulocochlear Nerve Diseases: Pathological processes of the VESTIBULOCOCHLEAR NERVE, including the branches of COCHLEAR NERVE and VESTIBULAR NERVE. Common examples are VESTIBULAR NEURITIS, cochlear neuritis, and ACOUSTIC NEUROMA. Clinical signs are varying degree of HEARING LOSS; VERTIGO; and TINNITUS.Hemifacial Spasm: Recurrent clonic contraction of facial muscles, restricted to one side. It may occur as a manifestation of compressive lesions involving the seventh cranial nerve (FACIAL NERVE DISEASES), during recovery from BELL PALSY, or in association with other disorders. (From Adams et al., Principles of Neurology, 6th ed, p1378)Petrous Bone: 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.Cerebellar Diseases: Diseases that affect the structure or function of the cerebellum. Cardinal manifestations of cerebellar dysfunction include dysmetria, GAIT ATAXIA, and MUSCLE HYPOTONIA.Meningeal Neoplasms: Benign and malignant neoplastic processes that arise from or secondarily involve the meningeal coverings of the brain and spinal cord.Choroid Plexus Neoplasms: Benign or malignant tumors which arise from the choroid plexus of the ventricles of the brain. Papillomas (see PAPILLOMA, CHOROID PLEXUS) and carcinomas are the most common histologic subtypes, and tend to seed throughout the ventricular and subarachnoid spaces. Clinical features include headaches, ataxia and alterations of consciousness, primarily resulting from associated HYDROCEPHALUS. (From Devita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2072; J Neurosurg 1998 Mar;88(3):521-8)Neurilemmoma: 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)Financial Audit: An examination, review and verification of all financial accounts.Vestibulocochlear Nerve: The 8th cranial nerve. The vestibulocochlear nerve has a cochlear part (COCHLEAR NERVE) which is concerned with hearing and a vestibular part (VESTIBULAR NERVE) which mediates the sense of balance and head position. The fibers of the cochlear nerve originate from neurons of the SPIRAL GANGLION and project to the cochlear nuclei (COCHLEAR NUCLEUS). The fibers of the vestibular nerve arise from neurons of Scarpa's ganglion and project to the VESTIBULAR NUCLEI.Cranial Fossa, Posterior: 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.Cochlear Aqueduct: A fine channel that passes through the TEMPORAL BONE near the SCALA TYMPANI (the basilar turn of the cochlea). The cochlear aqueduct connects the PERILYMPH-filled bony labyrinth to the SUBARACHNOID SPACE.Tinnitus: A nonspecific symptom of hearing disorder characterized by the sensation of buzzing, ringing, clicking, pulsations, and other noises in the ear. Objective tinnitus refers to noises generated from within the ear or adjacent structures that can be heard by other individuals. The term subjective tinnitus is used when the sound is audible only to the affected individual. Tinnitus may occur as a manifestation of COCHLEAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; INTRACRANIAL HYPERTENSION; CRANIOCEREBRAL TRAUMA; and other conditions.Facial Muscles: Muscles of facial expression or mimetic muscles that include the numerous muscles supplied by the facial nerve that are attached to and move the skin of the face. (From Stedman, 25th ed)Spasm: An involuntary contraction of a muscle or group of muscles. Spasms may involve SKELETAL MUSCLE or SMOOTH MUSCLE.Ganglioglioma: Rare indolent tumors comprised of neoplastic glial and neuronal cells which occur primarily in children and young adults. Benign lesions tend to be associated with long survival unless the tumor degenerates into a histologically malignant form. They tend to occur in the optic nerve and white matter of the brain and spinal cord.Facial Nerve: The 7th cranial nerve. The facial nerve has two parts, the larger motor root which may be called the facial nerve proper, and the smaller intermediate or sensory root. Together they provide efferent innervation to the muscles of facial expression and to the lacrimal and SALIVARY GLANDS, and convey afferent information for TASTE from the anterior two-thirds of the TONGUE and for TOUCH from the EXTERNAL EAR.Magnetic Resonance Imaging: 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.Endolymphatic Sac: The blind pouch at the end of the endolymphatic duct. It is a storage reservoir for excess ENDOLYMPH, formed by the blood vessels in the membranous labyrinth.Trigeminal Nerve: The 5th and largest cranial nerve. The trigeminal nerve is a mixed motor and sensory nerve. The larger sensory part forms the ophthalmic, mandibular, and maxillary nerves which carry afferents sensitive to external or internal stimuli from the skin, muscles, and joints of the face and mouth and from the teeth. Most of these fibers originate from cells of the TRIGEMINAL GANGLION and project to the TRIGEMINAL NUCLEUS of the brain stem. The smaller motor part arises from the brain stem trigeminal motor nucleus and innervates the muscles of mastication.Nerve Compression Syndromes: Mechanical compression of nerves or nerve roots from internal or external causes. These may result in a conduction block to nerve impulses (due to MYELIN SHEATH dysfunction) or axonal loss. The nerve and nerve sheath injuries may be caused by ISCHEMIA; INFLAMMATION; or a direct mechanical effect.Papilloma, Choroid Plexus: A usually benign neoplasm that arises from the cuboidal epithelium of the choroid plexus and takes the form of an enlarged CHOROID PLEXUS, which may be associated with oversecretion of CSF. The tumor usually presents in the first decade of life with signs of increased intracranial pressure including HEADACHES; ATAXIA; DIPLOPIA; and alterations of mental status. In children it is most common in the lateral ventricles and in adults it tends to arise in the fourth ventricle. Malignant transformation to choroid plexus carcinomas may rarely occur. (Adams et al., Principles of Neurology, 6th ed, p667; DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, p2072)Facial Paralysis: 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.Lipoma: A benign tumor composed of fat cells (ADIPOCYTES). It can be surrounded by a thin layer of connective tissue (encapsulated), or diffuse without the capsule.Reflex, Acoustic: Intra-aural contraction of tensor tympani and stapedius in response to sound.Neurothekeoma: A benign myxoma of cutaneous nerve sheath origin. Theke is from the Greek theke, sheath. (From Stedman, 25th ed)Ear, Inner: The essential part of the hearing organ consists of two labyrinthine compartments: the bony labyrinthine and the membranous labyrinth. The bony labyrinth is a complex of three interconnecting cavities or spaces (COCHLEA; VESTIBULAR LABYRINTH; and SEMICIRCULAR CANALS) in the TEMPORAL BONE. Within the bony labyrinth lies the membranous labyrinth which is a complex of sacs and tubules (COCHLEAR DUCT; SACCULE AND UTRICLE; and SEMICIRCULAR DUCTS) forming a continuous space enclosed by EPITHELIUM and connective tissue. These spaces are filled with LABYRINTHINE FLUIDS of various compositions.Craniotomy: Any operation on the cranium or incision into the cranium. (Dorland, 28th ed)Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Neurosurgical Procedures: Surgery performed on the nervous system or its parts.Temporal Bone: 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).Sarcoma, Myeloid: An extramedullary tumor of immature MYELOID CELLS or MYELOBLASTS. Granulocytic sarcoma usually occurs with or follows the onset of ACUTE MYELOID LEUKEMIA.

Contralateral deafness following unilateral suboccipital brain tumor surgery in a patient with large vestibular aqueduct--case report. (1/142)

A 68-year-old female developed contralateral deafness following extirpation of a left cerebellopontine angle epidermoid cyst. Computed tomography showed that large vestibular aqueduct was present. This unusual complication may have been caused by an abrupt pressure change after cerebrospinal fluid release, which was transmitted through the large vestibular aqueduct and resulted in cochlear damage.  (+info)

Clinical features and outcomes in patients with non-acoustic cerebellopontine angle tumours. (2/142)

OBJECTIVES: Non-acoustic tumours of the cerebellopontine angle differ from vestibular schwannomas in their prevalence, clinical features, operative management, and surgical outcome. These features were studied in patients presenting to the regional neuro-otological unit. METHODS: A retrospective analysis of clinical notes identified 42 patients with non-acoustic tumours of the cerebellopontine angle. Data were extracted regarding presenting clinical features, histopathological data after surgical resection, surgical morbidity and mortality, and clinical outcome (mean 32 months follow up). RESULTS: The study group comprised 25 meningiomas (60%), 12 epidermoid cysts/cholesteatomata (28%), and five other tumours. In patients with meningiomas, symptoms differed considerably from patients presenting with vestibular schwannomas. Cerebellar signs were present in 52% and hearing loss in only 68%. Twenty per cent of patients had hydrocephalus at the time of diagnosis. After surgical resection, normal facial nerve function was preserved in 75% of cases. In the epidermoid group, fifth, seventh, and eighth nerve deficits were present in 42%, 33%, and 66% respectively. There were no new postoperative facial palsies. There were two recurrences (17%) requiring reoperation. Overall, there were two perioperative deaths from pneumonia and meningitis. CONCLUSIONS: Patients with non-acoustic lesions of the cerebellopontine angle often present with different symptoms and signs from those found in patients with schwannomas. Hearing loss is less prevalent and cerebellar signs and facial paresis are more common as presenting features. Hydrocephalus is often present in patients presenting with cerebellopontine angle meningiomas. Non-acoustic tumours can usually be resected with facial nerve preservation.  (+info)

Choroid plexus papilloma of cerebellopontine angle with extension to foramen magnum. (3/142)

A case of choroid plexus papilloma resembling meningioma of cerebellopontine (CP) angle with its extension to foramen magnum is presented. Occurrence of this tumour in CP angle is very rare. Its extension towards foramen magnum is further rare. It was a real diagnostic enigma preoperatively as the tumour was resembling meningioma upto some extent on radiological study. Retromastoid craniectomy with microsurgical excision of tumour and its extension was achieved in toto. Tumour was attached to few rootlets of lower cranial nerves which were preserved. Attachment of the tumour with lower cranial nerves again caused diagnostic confusion with neurofibroma intraoperatively.  (+info)

High-resolution MR cisternography of the cerebellopontine angle: 2D versus 3D fast spin-echo sequences. (4/142)

BACKGROUND AND PURPOSE: The clinical usefulness of MR cisternography of the cerebellopontine angle, applying 2D or 3D fast spin-echo sequences, has been reported recently. Our purpose was to investigate the cause of signal loss in CSF in the prepontine or cerebellopontine angle cistern on 2D FSE MR images and to compare the cisternographic effects of 2D and 3D FSE sequences. METHODS: Preliminary experiments were performed in four volunteers to assess the causes of signal loss. Initially, using a 2D cardiac-gated cine phase-contrast method with a velocity encoding value of 6 cm/s, we measured the velocity and flow pattern of CSF. Comparisons were made to assess the effects of intravoxel dephasing, amplitude of the section-selecting gradient, echo time (TE), and section thickness. Four healthy subjects and 13 patients with ear symptoms were examined, and multisection 3-mm-thick 2D images and 30-mm-slab, 1-mm-section 3D images were compared qualitatively and quantitatively. Then, 3D MR cisternography was performed in 400 patients with ear symptoms, and qualitative evaluation was performed. RESULTS: In volunteers, the average peak velocity of CSF was 1.2 cm/s. With TE = 250, CSF may move an average of 3 mm, and can be washed out of a 3-mm-thick 2D section volume. The CSF signal relative to that of a water phantom decreased gradually as TE increased on single-section 3-mm-thick 2D images. The CSF signal relative to that of the water phantom increased gradually as section thickness increased. No significant differences were noted in intravoxel dephasing and amplitude of the section-selecting gradient. The contrast-to-noise ratio (CNR) between CSF and the cerebellar peduncle, and the visibility of the cranial nerves and vertebrobasilar artery were significantly improved on 3D images in 17 subjects. In images from 400 patients, no significant signal loss in the cistern was observed using 3D FSE. CONCLUSION: CSF signal loss in thin-section 2D MR cisternography is mainly attributable to the wash-out phenomenon. 3D acquisition can reduce this phenomenon and provide thinner sections. The scan time for 3D acquisition is not excessive when a long echo train length and half-Fourier imaging are used. MR cisternography should be performed using a 3D acquisition.  (+info)

High-resolution MR cisternography of the cerebellopontine angle, obtained with a three-dimensional fast asymmetric spin-echo sequence in a 0.35-T open MR imaging unit. (5/142)

High-resolution MR cisternography performed with 3D fast asymmetric spin-echo imaging (3D fast spin-echo with an ultra-long echo train length and asymmetric Fourier imaging) was optimized in a 0.35-T open MR imaging unit. The 0.35- and 1.5-T images of the two volunteers and three patients with acoustic schwannomas were then compared. The optimal parameters for images obtained by 3D fast asymmetric spin-echo imaging at 0.35 T were as follows: field of view, 15 cm; matrix, 256 x 256 x 40; section thickness, 1 mm; echo train length, 76; and imaging time, 10 minutes 44 seconds. Scans obtained from both normal volunteers showed the facial, cochlear, and superior and inferior vestibular nerves separately in the internal auditory canal on both 0.35- and 1.5-T images. All three acoustic schwannomas were depicted on both 0.35- and 1.5-T images. Screening for disease at the cerebellopontine angle and in the internal auditory canal, without the administration of contrast material on a low-field open MR imaging unit and within a clinically acceptable imaging time, may be possible. Further controlled prospective studies are required, however, before implementation on a wide basis. If proved effective, this may be of particular value for reducing healthcare costs and for imaging claustrophobic and pediatric patients in an open system.  (+info)

Posterior fossa surgery in the sitting position in a pregnant patient with cerebellopontine angle meningioma. (6/142)

Primary brain tumours and pregnancy rarely occur together; meningioma and pregnancy is rarer still. We describe a 30-yr-old woman in the 25th week of pregnancy who underwent surgery in the sitting position for a large cerebellopontine angle meningioma that was compressing and displacing the pons and medulla. The surgical procedure and postoperative period were uneventful. This case demonstrates that when absolutely necessary, anaesthesia and neurosurgery for posterior fossa lesions can be successful during the second trimester of pregnancy. Furthermore, if indicated and if the operating team is experienced, the operation can be performed safely with the patient in the classical sitting position. It is emphasized that continuous and attentive monitoring of the mother and fetus are essential.  (+info)

Magnetic resonance imaging artifact following acoustic neurofibroma surgery--case report. (7/142)

Metallic artifacts in magnetic resonance (MR) imaging occur mostly in patients who have received an implant at surgery. Similar artifacts are now increasingly recognized in patients in whom high-speed drills have been used. A 15-year-old male with neurofibromatosis 2 had undergone excision of acoustic neurofibroma on the left 1.5 years prior to the present admission. MR imaging to evaluate the acoustic neurofibroma on the right showed a metallic artifact at the site of the previous surgery. Computed tomography did not show any evidence of metal debris. The artifact was probably caused by metallic dust or debris from a high-speed drill during the first surgery. We suggest that care should be taken to prevent deposition of such debris in the operative field to prevent this complication.  (+info)

Malignant spread of haemangioblastoma: report on two cases. (8/142)

Two cases are described in which, after successful removal of a cerebellar haemangioblastoma followed by several years of freedom from symptoms, there developed a progressive spinal cord compression, leading to death. At necropsy the spinal cords in both cases and the brainstem in one case, were irregularly plastered with haemangioblastoma. Although there was no doubt that malignant spread had occurred from one or more primary tumours, the histology of the tumour tissue was in no way different from that of conventional haemangioblastoma.  (+info)

*Granulomatous meningoencephalitis

It usually is found in the cerebrum or cerebellopontine angle. Symptoms may be acute or develop slowly over several months and ...

*Subarachnoid cisterns

Cerebellopontine angle cistern. It is situated at the cerebellopontine angle - the lateral angle between the cerebellum and the ... ISBN 978-087893-695-3. CS1 maint: Extra text (link) Yee, Juliana K. "Cerebellopontine angle cistern , Radiology Reference ...

*Lateral aperture

... specifically into the pontocerebellar cistern at the cerebellopontine angle. The structure is also called the lateral aperture ...

*Intracranial epidermoid cyst

About 40% of these cysts originate in the cerebellopontine angle. Treatment to remove these tumors always involve radical ...

*Robert F. Spetzler

A partial list is below: Surgery of the Cerebellopontine Angle. Nicholas C. Bambakidis (Author), Cliff A. Megerian (Author), ...

*Anatomy of the cerebellum

From its origin, it branches along the inferior portion of the pons at the cerebellopontine angle before reaching the ... Moreover, it could cause an infarct of the cerebellopontine angle. This could lead to hyperacusia (dysfunction of the stapedius ...

*Bruns nystagmus

... is an unusual type of bilateral nystagmus most commonly occurring in patients with cerebellopontine angle ... Nedzelski JM (October 1983). "Cerebellopontine angle tumors: bilateral flocculus compression as cause of associated oculomotor ...

*Translabyrinthine approach

The translabyrinthine approach is a surgical approach to the cerebellopontine angle, or CPA. It is used in the surgical ... extirpation of lesions of the cerebellopontine angle, including acoustic neuroma. The translabyrinthine approach was developed ...

*Lipoma

"Left cerebellopontine angle lipoma with mild brainstem compression in a 13-year-old female". Otology & Neurotology. Wallace D ( ... Cerebellar pontine angle and internal auditory canal lipomas Chondroid lipomas are deep-seated, firm, yellow tumors that ...

*Dextroscope

"Preoperative evaluation of neurovascular relationships for microvascular decompression in the cerebellopontine angle in a ... A measurement tool provides accurate measurement of straight and curving 3D structures such as the scalp, and measure angles, ...

*Hemifacial spasm

Lee SH, Rhee BA, Choi SK, Koh JS, Lim YJ; Jankovic J (2010). "Cerebellopontine angle tumors causing hemifacial spasm: types, ... only 9 cases were caused by a cerebellopontine angle syndrome, an incidence of 0.44%. The earliest descriptions about ...

*Vestibulocochlear nerve

... at the cerebellopontine angle, and then goes with the 8th nerve through the internal acoustic meatus to the internal ear. The ... and cerebellum that contains the 8th nerve is called the cerebellopontine angle. The vestibulocochlear nerve is accompanied by ...

*Ludvig Puusepp

... for a right-sided cerebellopontine angle mass. Over the next twenty years he developed a strong neurological and neurosurgical ...

*Central nervous system cyst

They are most commonly found in the area near the pineal gland, the chiasmatic cistern, and the cerebellopontine angle space. ...

*Vestibular schwannoma

... they tend to expand into the cerebellopontine angle (CPA), leading to their characteristic "ice-cream-cone like" appearance on ...

*Sensorineural hearing loss

Tumor Cerebellopontine angle tumour (junction of the pons and cerebellum) - The cerebellopontine angle is the exit site of both ... non-neoplastic Internal Auditory Canal/CerebelloPontine Angle pathology, including vascular loops, Presbycucis is the leading ...

*ಕಪಾಲ ನರಶೂಲೆ - ವಿಕಿಪೀಡಿಯ

Babu R, Murali R (1991). "Arachnoid cyst of the cerebellopontine angle manifesting as contralateral trigeminal neuralgia: case ...

*Index of anatomy articles

... centrum semiovale cephalic cephalic vein cerebellar peduncle cerebellar projection cerebellar tonsil cerebellopontine angle ... canine tooth canthus capillary capitate capitulum caput caput medusae carapace cardiac Cardiac skeleton cardiophrenic angle ... amygdala corticopontine fibers corticospinal tract corticostriate fiber costal cartilages costal margin costophrenic angle ...

*List of syndromes

... system syndrome Central pain syndrome Cerebellar cognitive affective syndrome Cerebellar stroke syndrome Cerebellopontine angle ...

*CPA

... an algorithm for scheduling a set of project activities Cerebellopontine angle, a structure at the margin of the cerebellum and ...

*Charles Alfred Ballance

He also did the first operation for complete removal of a cerebellopontine angle tumor, as well as being one of the first ...

*Jugular foramen syndrome

Metastatic tumors located at the cerebellopontine angle Trauma Infections Cholesteatoma (very rare) Obstruction of the jugular ...

*Vertigo

... tumors present in the cerebellopontine angle such as a vestibular schwannoma or cerebellar tumors, epilepsy, cervical spine ...

*Median aperture

... which drain cerebrospinal fluid into the cerebellopontine angle cistern. The median foramen on axial images is posterior to the ...

*Neurofibromatosis type II

... of a lesion of the nervus vestibulocochlearis due to a tumour in the region of the cerebello-pontine angle are the following: ... enhancing tumours in the region of the cerebello-pontine angle in gadolinium-enhanced MRI scans, hearing loss in audiometric ...

*List of MeSH codes (A08)

... cerebellopontine angle MeSH A08.186.211.132.810.428.600 --- pons MeSH A08.186.211.132.810.428.600.135 --- cochlear nucleus MeSH ...

*Vertigo

... tumors present in the cerebellopontine angle such as a vestibular schwannoma or cerebellar tumors,[9][11] epilepsy,[21] ...

*Arachnoid cyst

"Cerebellopontine angle arachnoid cyst harbouring ectopic neuroglia", Pediatr Neurosurg. 2005 Jul-Aug;41(4):220-3. (PMID ...
We present a rare and interesting case of a cerebellopontine angle cyst containing ectopic choroid plexus tissue in a 26 year-old female. Surgical resection was performed, and histological examination confirmed the presence of choroid plexus in the cyst wall. This is the first reported case of ectopic choroid plexus at the cerebellopontine angle in an adult. We present the case and review the literature.
Details of the image Vascular compression syndrome in the cerebellopontine angle cistern Modality: Annotated image (Axial T2)
TY - JOUR. T1 - A fibrotic nodule arising from the cerebellopontine angle. AU - Amano, Toshiyuki. AU - Suzuki, Satoshi. AU - Mizoguchi, Masahiro. AU - Yoshimoto, Koji. AU - Nakamizo, Akira. AU - Murata, Hideki. AU - Iwaki, Toru. AU - Sasaki, Tomio. PY - 2013/4/1. Y1 - 2013/4/1. N2 - The authors present an extremely rare case of a fibrotic nodule arising from the cerebellopontine (CP) angle. A 57-year-old male had suffered from hearing disturbance and tinnitus for several years. Computed tomography revealed a high-density mass in the left CP angle with little enhancement after intravenous administration of contrast media. Magnetic resonance imaging (MRI) showed a very hypointense mass on T2-weighted imaging. T1-weighted MRI with gadolinium revealed very faint, delayed enhancement of the tumor. The patient underwent surgical resection of the tumor. Histopathologically the lesion comprised entirely fibrotic tissue consisting of thick collagenous fibers and sclerosing blood vessels with a few ...
Abstract BACKGROUND: Primitive neuroectodermal tumors (PNETs) comprise a group of aggressive, poorly differentiated embryonal tumors occurring in central nervous system as well as in peripheral locations. Primary cerebellopontine angle (CPA) PNET is an extremely rare entity. It is important to have knowledge of this pathology and to be able to differentiate it from other commonly occurring CPA tumors, such as vestibular and trigeminal schwannomas. This distinction is essential because of the difference in the overall treatment plan and prognosis. CASE DESCRIPTION: This report describes a case of a young male presenting with diplopia and numbness of face; magnetic resonance imaging showed a CPA mass. With a provisional diagnosis of trigeminal schwannoma, the patient underwent surgery. Histopathology provided a diagnosis of PNET. CONCLUSION: We discuss the importance of recognizing this rare condition and how this entity differs from the commonly occurring tumors.
This patient went on to have a resection. Pathology Final diagnosis: Meningioma Microscopic Description: Sections A1-A6 show a cellular tumor with the histologic features of meningioma. The tumor cells show uniform nuclei without mitotic acti...
The skull base includes the frontal bone, the sphenoid bone, the temporal bone, and the occipital bone. Tumors of the temporal bone and skull base tend to arise in one of three locations: (1) the mastoid or middle ear, (2) the jugular foramen, or (3) the petroclival junction or petrous apex. Tumors of the cerebellopontine angle and Meckel cave are not considered in this chapter (see Chapter 61, Nonacoustic Lesions of the Cerebellopontine Angle). Tumors arising within the skull base are rare and usually cause few symptoms until they grow to a size in which they begin to affect cranial nerves. Table 65-1 lists the various skull base neoplasms and their imaging characteristics. ...
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My wife received postoperative whole brain radiation therapy for a single brain metastasis in the Summer of 1998. She began developing brain radiation necrosis within 6-10 months after whole brain radiation, confirmed by an enhanced MRI in June of 1999. Her radiation-induced brain necrosis could have been focal or diffuse, depending on the modality of treatment. The five fractions of focal radiation to the local tumor bed could have resulted in either focal necrosis around the tumor bed or metastatic recurrance. In her case she developed metastatic recurrance as per Pet Scan of August 2000 showing abnormal foci of radiotracer accumulation within the right cerebellar hemisphere, right cerebellopontine angle, pons and base of the fourth ventricle consistent with new metastatic foci. Her previous tumor resection of July 1998, was a 3.5cm necrotic mass in the right cerebellar hemisphere. Recurrance of a cerebral metastasis was very likely to happen in the future. It did, observed via an enhanced MRI ...
... , BRAIN TUMORS OPERATED BY PROF. SHAHZAD SHAMS :- MENINGIOMAS , MALIGNANT Brain Tumour(Glioma, Astrocytoma, Metastatic), Cerebellopontine angle tumours, Acoustic Neuroma Schwannoma Tumor, Pituitary tumor, Prolactinoma, Colloid cysts, Craniopharyngioma, Rathkes Cleft Cyst, Sellar and Parasellar tumors and Brain Tuberculomas, Prof. Shahzad Shams presently works as Head and Professor of Neurosurgery Department at Lahore General Hospital, LGH, Lahore.
Grant finansowany przez: The J. William Fulbright Foreign Scholarship Board & The U.S. Department of State Nr P008/00 (2000-2001) - Kierownik Projektu i Główny Wykonawca "Identifying in an Animal Model Criteria for the Intraoperative Monitoring of Cochlear Function During Neuro-Otologic Surgery in Patients with Cerebello-Pontine Angle Tumors Using Otoacoustic Emissions ...
Acoustic neuromas (vestibular schwannomas) are nerve sheath tumours in the internal auditory canal or cerebello-pontine angle.. Acoustic shock syndrome is defined as "any temporary or permanent disturbance of the functioning of the ear, or of the nervous system, which may be caused to the user of a telephone earphone by a sudden sharp rise in the acoustic pressure produced by it." (International Telecommunications Union European Transmission Standards Institute). These unexpected high-level sounds have been reported to cause a variety of symptoms such as shock, nausea, headaches, hypersensitivity to loud sounds, dizziness and imbalance, neck and shoulder pain, concentration and memory problems, panic and fear, tinnitus, tiredness and decreased quality of life. The duration of the symptoms is variable.. Autoimmune-mediated inner ear disorders are characterised by sensorineural hearing loss and may be accompanied by vestibular symptoms.. Bacterial otomastoiditis with involvement of the labyrinth ...
The following thesis presents a protocol for the three-dimensional visualization of the cranial nerves V-VIII within the basal cisterns, being optimized with regard to data acquisition and postprocessing. Based on high resolution MRI datasets and using the volume rendering technique, 10 standardized views of the aforementioned cranial nerves were developed. Thus, the complete and time effective intracisternal depiction was intended to be made possible, focussing on pathophysiological important areas of the nerves. The protocol showed its suitability concerning image quality and diagnostic value in evaluation of patients with neurovascular conflicts or other neural compression syndromes in the cerebello-pontine angle. Problems mainly occurred as a result of pulsation and motion artefacts in the MR dataset and narrow cisterns in the level of the virtual camera position. In most cases they could be solved by slight variations of the postprocessing parameters. To guaranty the correct identification ...
The following thesis presents a protocol for the three-dimensional visualization of the cranial nerves V-VIII within the basal cisterns, being optimized with regard to data acquisition and postprocessing. Based on high resolution MRI datasets and using the volume rendering technique, 10 standardized views of the aforementioned cranial nerves were developed. Thus, the complete and time effective intracisternal depiction was intended to be made possible, focussing on pathophysiological important areas of the nerves. The protocol showed its suitability concerning image quality and diagnostic value in evaluation of patients with neurovascular conflicts or other neural compression syndromes in the cerebello-pontine angle. Problems mainly occurred as a result of pulsation and motion artefacts in the MR dataset and narrow cisterns in the level of the virtual camera position. In most cases they could be solved by slight variations of the postprocessing parameters. To guaranty the correct identification ...
We discuss a case with combined vestibulocochlear and facial neuropathy mimicking a less urgent peripheral vestibular pattern of acute vestibular syndrome (AVS). With initial magnetic resonance imaging read as normal, the patient was treated for vestibular neuropathy until headaches worsened and a diagnosis of subarachnoid hemorrhage was made. On conventional angiography, a ruptured distal right-sided aneurysm of the anterior inferior cerebellar artery was diagnosed and coiled. Whereas acute vestibular loss usually points to a benign peripheral cause of AVS, combined neuropathy of the vestibulocochlear and the facial nerve requires immediate neuroimaging focusing on the cerebellopontine angle. Imaging should be assessed jointly by neuroradiologists and the clinicians in charge to take the clinical context into account. ...
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 ...
The lateral aperture is a paired structure in human anatomy. It is an opening in each lateral extremity of the lateral recess of the fourth ventricle of the human brain, which also has a single median aperture. The two lateral apertures provide a conduit for cerebrospinal fluid to flow from the brains ventricular system into the subarachnoid space; specifically into the pontocerebellar cistern at the cerebellopontine angle. The structure is also called the lateral aperture of the fourth ventricle or the foramen of Luschka after anatomist Hubert von Luschka.[1] ...
Objectives: Cerebellopontine angle (CPA) tumers are rare in children. Delay in diagnosis may etten occur. In order to bring this entity to attenlion, medical records of children with CPA tumers were evaluated. Patients and Methods: A retrospective review of 1500 consecutive patients with CPA tumers revealed eight patients who were below age 18 at the time of treatment. Patients with neurofibromatosis type 2 were excluded. Medical records were evaluated with respect to preoperative symptoms, treatment, and outcome. Results: The patients ages ranged from 13 to 17 (average 15.2) years. Unilateral sensorineural hearing lass, tinnitus, and headache were the most frequent preoperative symptoms. Tumor size was between 1.5 and 4.5 cm (average 3.6 cm). Patients underwent surgery using translabyrinthine approach (n=7) and transcochlear route (n=1) with an acceptable morbidity. Conclusion: A high index of suspicion is essential for early diagnosis of CPA tumors in children with suggestive symptoms such as ...
Quick spins and acquired motion intolerance may be characteristic clinical symptoms, although at the present writing, studies looking for subpopulations with those particular index symptoms for response to decompression surgery have not been made (and probably they will never be done). In our opinion, air contrast CT or MRI/MRA are not diagnostic if a blood vessel is seen, it need not be viewed with concern, but MRI/MRA may help in excluding alternative causes. Newer types of MRI including FT-FISS may be more helpful . McDermott and associates, in a large study, recently reported that loops that extend into the IAC (internal acoustic canal) are more significant sources of unilateral auditory symptoms (such as tinnitus) than loops simply within the CPA (cerebellopontine angle). (McDermott et al, 2003). A simple severity classification system from McDermott et al (2003) is as follows: type I -- in the CPA but not entering the IAC, type II, entering the IAC but extending less than 50% of the ...
In addition to the voxel-by-voxel multiple regression analysis, a region-of-interest (ROI) analysis was performed. Gaze-evoked responses were assessed in eight anatomical areas comprising parts of the auditory and visual pathways. The CN, inferior colliculi (IC), and superior colliculi (SC) were defined per subject based on their anatomical image. The ROI consisting of the CN included the lower posterior part of the brainstem and was drawn near the cerebellopontine angle (Hawley et al., 2005). The colliculi were drawn on the easily identifiable superior and inferior protrusions of the quadrigeminal plate on the posterior side of the midbrain. The medial geniculate bodies (MGB) and lateral geniculate bodies (LGB) were selected according to the WFU pickatlas (Maldjian et al., 2003). The bilateral auditory cortex (AC) was defined by means of the regression outcomes; this ROI comprised all voxels in the temporal lobe that were activated by the condition Sound in the control group (see Results). ...
We find that the dimer formation rate increases by a factor of 5 as tension ranges from 0 to 4 dyn/cm. Integrated human rights and poverty eradication strategy: the case of civil registration rights in Zimbabwe. Lung cancer in nonsmoking women: a multicenter case-control study. Postlabyrinthine approach of generic cialis available cerebellopontine angle surgery via endoscope Hybridization-sensitive fluorescence control in the near-infrared wavelength range.. Low mortality in Mediterranean populations has stimulated much interest, a possible explanation being diet. Agranulocytosis possibly caused by ranitidine in a patient with renal failure. One concern about those methods is their inherent sensitivity to the assumption of multivariate normality which cannot be easily guaranteed in practice. Stimulation of GABAB receptors increases the expression of the proenkephalin gene in slice cultures of rat neocortex.. Preparation of strong anion-exchange chromatographic packings based on monodisperse ...
In patients with unilateral hearing loss and dizziness it is important to rule out a cerebellopontine angle process. This is often done by audiological and otoneurological investigations. However, in many cases we must rely on the imaging of the temporal bone and the cerebello-brainstem area. The paper has presented the three dimensional (3D) Fast Spin-Echo (FSE) T2 weighted, 0.7 mm thick MR images, which in addition to being quick, does not require the use of expensive contrast material. Between September 1996 and November 1997, 152 patients with unilateral hearing loss and/or balance disorders were investigated. In normal cases the 7th and 8th nerves could be followed accurately from the brainstem to the internal auditory meatus. The found tumors were hypointense compared to the cerebrospinal fluid and could be outlined with reasonable accuracy even without gadolinium contrast. The inner ear had high signal, like cerebrospinal fluid. The patency of the cochlea could be estimated accurately. ...
Free Online Library: Bilateral cerebellopontine angle metastatic melanoma: a case report.(Disease/Disorder overview) by Ear, Nose and Throat Journal; Health, general Accountants Blood glucose Blood sugar Cancer metastasis Care and treatment Development and progression Prognosis Cerebrospinal fluid proteins Certified public accountants Medical research Medicine, Experimental Melanoma Metastasis Radiotherapy
We present a case with outspoken spontaneous vestibular schwannoma shrinkage and review the related literature. The patient was initially diagnosed with a left-sided, intrameatal vestibular schwannoma, which subsequently grew into the cerebello-pontine angle (CPA), followed by total shrinkage of the CPA component without any intervention over a 12-year observation period. The literature on spontaneous tumor shrinkage was retrieved by searching the subject terms "vestibular schwannoma, conservative management" in PubMed/MEDLINE database, without a time limit. Of the published data, the articles on "shrinkage" or "negative growth" or "regression" or "involution" of the tumor were selected, and the contents on the rate, extent and mechanism of spontaneous tumor shrinkage were extracted and reviewed. The reported rate of spontaneous shrinkage of vestibular schwannoma is 5-10% of patients managed conservatively. Extreme shrinkage of the tumor may occur spontaneously ...
CranIal Nerve V lesion The differential diagnosis of cranial nerve V lesions / causes of cranial nerve lesion are : -neoplastic infiltration of the base of the skull -cerebellopontine angle tumor -acoustic neuroma
Acoustic Neuroma (1) Adenoid (5) Adenoid hypertrophy (1) Adenoidectomy (5) Allergic Rhinitis (1) Angiofibroma (1) Antrochoanal Polyp (2) Balloon Sinuplasty (2) basal cell carcinoma (1) Benign paroxysmal positional vertigo (BPPV) (1) Bruxism (Grinding of teeth) (1) Cancer oral cavity (2) Cerebellopontine angle tumour (2) cervical rib (1) Cervical spondylosis (2) Cholesteatoma (4) chronic sinusitis (5) Concha Bullosa (3) Consent (16) Contact Granuloma (1) Cosmetic Nasal Surgery (1) Deafness. (1) Dengue Fever (1) Deviated Nasal Septum (4) Discharging ears (2) Dizziness (1) DNS (2) Drugs causing hearing loss (1) Ear bleed. (1) Ear buds (1) Ear cleaning (1) Ear drum perforation (1) ear lobule (2) Ear Surgery (3) Endoscopic Sinus Surgery (5) ENT Care (5) Epistaxis (4) Eustachian tube (1) Extrasinus mucocoele (1) foreign body (2) Frontal Sinus (1) Frontal sinus surgery (1) Gastroesophageal Reflux Disease (GERD) (1) Hearing Aids (1) Influenza prevention (1) Isometric Neck Exercises (1) Jal Neeti (1) ...
Acoustic Neuroma (1) Adenoid (5) Adenoid hypertrophy (1) Adenoidectomy (5) Allergic Rhinitis (1) Angiofibroma (1) Antrochoanal Polyp (2) Balloon Sinuplasty (2) basal cell carcinoma (1) Benign paroxysmal positional vertigo (BPPV) (1) Bruxism (Grinding of teeth) (1) Cancer oral cavity (2) Cerebellopontine angle tumour (2) cervical rib (1) Cervical spondylosis (2) Cholesteatoma (4) chronic sinusitis (5) Concha Bullosa (3) Consent (16) Contact Granuloma (1) Cosmetic Nasal Surgery (1) Deafness. (1) Dengue Fever (1) Deviated Nasal Septum (4) Discharging ears (2) Dizziness (1) DNS (2) Drugs causing hearing loss (1) Ear bleed. (1) Ear buds (1) Ear cleaning (1) Ear drum perforation (1) ear lobule (2) Ear Surgery (3) Endoscopic Sinus Surgery (5) ENT Care (5) Epistaxis (4) Eustachian tube (1) Extrasinus mucocoele (1) foreign body (2) Frontal Sinus (1) Frontal sinus surgery (1) Gastroesophageal Reflux Disease (GERD) (1) Hearing Aids (1) Influenza prevention (1) Isometric Neck Exercises (1) Jal Neeti (1) ...
A 50-year-old man presented with a 2 month history of dizziness. CT scan revealed a large right lesion at the cerebello-pontine angle consistent with an acoustic neuroma. Note the displacement of the pons. Audiometric testing revealed no significant hearing loss ...
The prevalence of arachnoid cysts in children is 1-3%. They are more frequent in boys. They can be located intracranially or in the spine. Intracranial cysts are classified as supratentorial, infratentorial, and supra-infratentorial (tentorial notch). Supratentorial are divided into middle cranial fossa, convexity, inter-hemisferic, sellar region, and intraventricular. Infratentorial are classified into supracerebellar, infracerebellar, hemispheric, clivus, and cerebellopontine angle. Finally spinal arachnoid cysts are classified taking into account whether they are extra- or intradural, and nerve root involvement ...
TY - JOUR. T1 - Cerebralis epidermoid cystában kialakult malignus melanoma.. AU - Vajtai, I.. AU - Tassi, D.. AU - Varga, Z.. AU - Tarjányi, J.. AU - Vörös, E.. PY - 1995/5/28. Y1 - 1995/5/28. N2 - A case of malignant melanoma arising in a cerebral epidermoid cyst is reported. The neoplasm presented as a rapidly enlarging mass in the left temporal lobe of a 52-year-old woman. The authors provide histological evidence for the provenance to tumour cells from the epithelial lining of the cyst. The melanocytic nature of the neoplasm was demonstrated by immunohistochemistry and electron microscopy. Post mortem examination ruled out the possibility of metastatic origin. The occurrence of intracranial epidermoid cysts and malignant melanoma, their eventual association with maldevelopmental processes or neoplasia are briefly reviewed. Although linked together histogenetically, epidermoid cysts and melanoma do not seem to be involved by common pathogenetic processes. To the best of our knowledge, no ...
Review of past cases, patients often do not exhibit many symptoms or obtain a diagnosis until they are around 20 to 40 years old. If the patient does show symptoms, it is most likely due to pressure from growth of the tumor. Depending on which part the epidermoid is pressing against can result in varying symptoms. Headaches - often worse in the morning or by changing positions; can be constant and become more severe or more frequent; not your typical headache Vision problems like blurred vision, double vision, or loss of peripheral vision Loss of sensation or movement in the arms, legs, or face Dizziness or difficulty with balance and walking, unsteadiness, vertigo Speech difficulties Confusion in everyday matters or disorientation Seizures, especially in someone who hasnt had seizures before Hearing loss or buzzing or ringing in the ear Swallowing or speech difficulty Fatigue or sleepiness especially in children These tumors arise when epidermal cells become trapped during neural tube closure. ...
In the premiere of This is Zit, Dr. Sandra Lee breaks down her process for excising an epidermoid cyst, and reveals what is REALLY going on beneath the surface.
Hybridization and the Structure of Polyatomic Molecules Waarom hebben moleculen bepaalde vormen? H 2 O driehoek, NH 3 pyramide CH 4 tetrahedral, CO 2 linear? H 2 O O elektron configuratie: Dus een basis set van met 4 elektronen te verdelen over deze bindingen overlap elke H1s met een O2p, resulterend in 2 σ-bonds, met elk 2 e, dus: Maar: hoek van 90 o, in werkelijkheid 104 o …
Sensorineural hearing loss occurs when there is damage to the inner ear structures such as the cochlea or the cochlear nerve. This often occurs due to aging and is called presbyacusis. It can also occur due to infection or less commonly tumours. If a patient has one-sided sensorineural hearing loss, an assessment by the ENT surgeon is necessary to exclude brain tumour (cerebellopontine angle). Sensorineural hearing loss can also be congenital; present since birth. And it is important to detect this early because it can affect the speech development of the child ...
Should the superior petrosal vein be sacrificed during surgery for trigeminal neuralgia? What are the implications of its obliteration?
A list of 16 letter words that end with e in the mammoth uncensored word list. (157 words: acetoacetanilide acetylsalicylate alkylcycloalkane aminotransferase anthropomorphize anticonglomerate antihypertensive archconservative automanipulative carboxypeptidase cardioprotective cerebellopontine chlordiazepoxide compartmentalise compartmentalize contraindicative counterclockwise counterespionage counterincentive counterinfluence...)
Looking for vestibular schwannoma images? Dont panic, and download free vestibular schwannoma wallpapers weve created for you.
Concentric layers of keratin, crystalline cholesterol, water, and debris from progressive cyst wall desquamation Derived from ectoderm but no dermal derivatives (no sebaceous glands, no hair) (as opposed to dermoid cysts) MC location: CP angle (basal cistern overally is the most common site) Symptoms: headache or other signs of increased ICP, seizure Although not common,…
The radiologic findings in a case of an extradural diploic epidermoid tumor (ET) of the frontal bone, examined with plain X rays, CT and MRI, are reported. A head injury with traumatic inclusion of...
Merck & Co., Inc., Kenilworth, NJ, USA is a global healthcare leader working to help the world be well. From developing new therapies that treat and prevent disease to helping people in need, we are committed to improving health and well-being around the world. The Merck Manual was first published in 1899 as a service to the community. The legacy of this great resource continues as the Merck Manual in the US and Canada and the MSD Manual in the remainder of the world. Learn more about our commitment to Global Medical Knowledge.. ...
8: Dutta, M., J. Saha, G. Biswas, S. Chattopadhyay, I. Sen and R. Sinha, 2013. Epidermoid cysts in head and neck: Our experiences, with review of literature. Indian J. Otolaryngol. Head Neck Surg., 65: S14-S21 ...
RESULTS Twenty patients had labyrinthine lesions. Six patients had viral labyrinthitis, one patient had bacterial labyrinthitis, and one patient had luetic labyrinthitis. Three patients had hemorrhage in the labyrinth, two posttraumatic and one spontaneous from an adjacent temporal bone tumor. Only one of the two patients with traumatic labyrinthine hemorrhage had evidence of a fracture on high-resolution CT. In one patient with CT-proved cochlear otosclerosis, peri-cochlear foci of enhancement were seen on contrast-enhanced MR. Four patients had presumed labyrinthine schwannomas. A middle ear cholesteatoma in one patient invaded the cochlea and resulted in marked cochlear enhancement due to granulation tissue. Thirteen patients had intracanalicular and cerebellopontine angle lesions. The lesions included arteriovenous malformations (three patients), sarcoidosis (three patients), metastasis (two patients), lymphoma (two patients), lipomas (two patients), and postshunt meningeal fibrosis (one ...
Epidermoid Cyst vs. Meningocele. Epidermoid Cyst vs. Meningocele Left Picture: The diagnosis is an epidermoid cyst. Right Picture: The diagnosis is a meningocele. The reliability of both diagnoses can be increased by additional examinations such as ultrasound, CT and/or MRI. The additional examinations are useful mainly to recognize a possible continuation of an epidermoid or dermoid cyst to the inside of the skull, or, in case of a meningocele, to differentiate it from a meningoencephalocele, and to diagnose combined anomalies, such as hydrocephalus and other malformations. Both pathologies lie in the midline over the back of the head and are covered with normal skin. Left Picture: Although the presented pathology is the most frequently observed lesion on the skull, its location in the midline is not really helpful for the differential diagnosis. The mass is firm and rather rough on palpation. The overlying skin is normal. Right picture: The mass is soft and gets tight when the child cries ...
Cranial Nerve Surgery-click here to listen. In this podcast, topic editor Dr. Roberto Heros of the University of Miami, Florida, speaks with Dr. Shaun Rodgers of New York University, New York. They discuss Dr. Rodgers and colleagues article: Short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing syndrome secondary to an epidermoid tumor in the cerebellopontine…
The authors reviewed the cases of 49 children, ranging in age from 9 months to 15 years, who were diagnosed by computerized tomography (CT) as having brain-stem glioma. Four distinct groups of brain-stem gliomas were identified based on CT scan characteristics: Group I included isodense contrast-enhancing tumors that were dorsally exophytic into the fourth ventricle; Group II(a) included hypodense nonenhancing intrinsic tumors of the brain stem; Group II(b) included intrinsic tumors of the brain stem with hyperdense exophytic components extending ventrally and laterally into the cerebellopontine and prepontine cisterns; Group III included intrinsic cystic tumors with contrast-enhancing capsules; and Group IV included focally intrinsic tumors of the brain stem that were isodense and enhanced brightly on administration of contrast medium. The clinical presentation, efficacy of surgical intervention, pathology, and prognosis of these tumors were correlated within these groupings. Eleven patients ...
Splenic cysts are very rare lesions, most of them being parasitic systs. Nonparasitic cysts are uncommon. We report a case of young female who presented with mass and pain abdomen. Ultrasound examination revealed splenic syst. The diagnosis of epidermoid cyst was made based on characteristic lining on histopathological examination ...
SCROLL DOWN FOR VIDEO. An epidermoid cyst (Epidermal Inclusion cyst, Infundibular cyst), is a benign growth commonly found in the skin and typically appears on the face, neck or trunk, but can occur anywhere on the body. Another name used is "sebacous cyst" but this is actually an antiquated misnomer, and is not a term used by dermatologists. They are also the most common type of cutaneous cysts. Epidermoid cysts result from the reproduction of epidermal cells within a confined space of the dermis. The pasty contents are mostly composed of macerated keratin (wet skin cells), which creates this "cheesy" consistency, and there can be a pungent odor. An epidermoid cyst may have no symptoms and are typically harmless. Usually people seek removal because they dont like the appearance of these bumps, or the cyst has ruptured or been inflamed or "infected" in the past. Rupture is associated with sudden redness, pain, swelling, and local heat, and can lead to abscess formation. Also, a history of ...
Epidermoids tend to have a smooth grey surface and contain friable waxy material inside. It is different to a dermoid cyst in that it tends to connect to and envelop adjacent structures whereas dermoid structures usually have defined boundaries. Their presence can be ascertained outside as a mobile, rubbery mass that presents as a cosmetic deformity ...
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Make use of a damp, warm compress in excess of an epidermoid cyst to encourage it to empty and recover. The washcloth must be scorching but not so hot that it burns the pores and skin. Position it about the cyst two to 3 times every day.[20] Cystic acne responds far better to ice than it does to heat ...
The classic sonographic description of an epidermoid cyst is a mass with a target or onion ring appearance. However this is often not the case. The lesion can be inhomogeneous with cystic elements. Histologically the tumor consists of cystic cavities lined by squamous epithelium and contains desquamated keratinized epithelium ...
The most common symptoms of vestibular schwannoma include asymmetric hearing loss, unilateral tinnitus, sudden hearing loss, facial hypesthesia (numbness), and dizziness or imbalance. When a tumor becomes very large, it can result in headaches and other discomfort due to an increased intracranial pressure. Facial paralysis is generally not a sign of vestibular schwannoma. Patients presenting with facial paralysis and a tumor in the cerebellopontine angle are more likely to be suffering from a facial nerve schwannoma instead of a vestibular one.. The treatment of vestibular schwannoma has substantially evolved over the past three decades. Thirty years ago, nearly all patients would have a resection of their tumor. As more data became available, it has been recognized that small tumors in older patients generally do not grow, and some tumors in the younger population may not grow. It would be very uncommon that a large tumor would not grow. In addition, the use of lower dose stereotactic radiation ...
These are small lumps which develop underneath the skin on your body and possibly groin area although they are more commonly found on the neck and face. They are benign cysts which take a long time to grow and are usually painless.. An epidermoid cyst is also known as a sebaceous cyst, keratin cyst or epidermal inclusion cyst. But whether it should be known as a sebaceous cyst is open to debate as they are considered to be two separate cysts.. The sebaceous cyst is formed from oil (sebum) which is produced in the sebaceous glands. This oil helps to lubricate the skin and hair.. Epidermoid cysts are formed from cells which are found in the outer layer of skin or epidermis - hence the name.. ...
Like I said the biological world are full of majins; all interconnected to one another in the strangest of ways. Autoimmunity is a subject that thrills me. For those of you are unfamiliar to the concept, its quite simply put. Its when your immune system- that which guards you from bacteria, viruses and worms- loses its ability to distinguish friend from foe and goes on a wild rampage attacking the body cells and causing tissue damage in the long run. Imagine a situation of friendly fire and you get the idea.Examples range from multiple sclerosis, systemic lupus, Graves Disease and Type I diabetes. So to give you a very, very general outline, its like this: there are two types of cells called the B and T cells which mature in the bone marrow and the thymus respectively. The T-cells can potentially detect millions of different antigens , but they need help. Cells called dendritic cells (a part of the antigen-presenting cell milleu) can process antigens and "present" them to the T-cells for ...
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2563718/. Historically patients often do not have many symptoms or a diagnosis until the second to fourth decade of life due to pressure from growth. With recent evolving technology, these congenital brain tumors are now found in young patients and with some even before birth.. A few patients have tumors that grow unusually fast, especially after surgery. We do not know why this happens. We suggest patients monitor their tumors as their neurosurgeons or neurologists suggest. We also suggest using the same facility with each scan, if possible, as minor variations may seem to indicate falsely that your tumor may be growing, when the measurements taken may be different due to differences in the MRI machines and the software used.. Adherence. Epidermoid tumors strongly adhere to the brain stem or cranial nerves, and other structures with in the brain. Often residual tumor may remain after surgery, which contributes to the risk of regrowth. The nerves that ...
That is hard. You are given the correct and generally accepted (and also taught in standard courses!) answer that destructive interference is always accompanied by constructive interference nearby and that it is impossible to construct a situation where you get complete destructive interference everywhere if you start from a situation with two seperate beams and you give such an arrogant response? You are not likely to get any more answers in these forums if you continue like that ...
Vestibular schwannomas, also previously known as acoustic neuromas, are common, histologically benign tumors of the vestibulocochlear nerve (cranial nerve VIII) found in the cerebellopontine angle (CPA). Their name comes from their more common location arising from the inferior division of the vestibular nerve of cranial nerve VIII. They comprise 8-10% of all intracranial tumors with an annual incidence around 1.5 cases per 100,000 population. Symptoms arise generally after 30 years of age. Early symptoms include hearing loss (usually high frequency), tinnitus (high-pitched), and dysequilibrium. Hearing loss is insidious and progressive. Only 10% of patients experience sudden hearing loss. Larger tumors may cause facial numbness or weakness, headache, and focal brainstem signs including weakness. Workup for all patients involves brain MRI with and without contrast and audiometrics. Most vestibular schwannomas are unilateral. Bilateral vestibular schwannomas are characteristic of ...
Uncommon schwannoma Usually middle age patients If acoustic schwanomma is also present, consider NF 2 Typical symptoms are trigeminal neuralgia or numbness. Can have mass effects. Radiographic features - can have dumbbell appearance (extend into cavernous sinus & cistern) - Can be confined to Meckels cave (ganglionic), CP angle (preganglionic) or extend to cavernous sinus…
Terminology. Several synonyms exist for epidermoid cysts, including epidermal cyst, infundibular cyst, keratin cyst and the technically incorrect, epidermal inclusion cyst.[1]:778[2] "Epidermal inclusion cyst" more specifically refers to implantation of epidermal elements into the dermis. The term infundibular cyst refers to the site of origin of the cyst: the infundibular portion of the hair follicle. In fact, the majority of epidermal inclusion cysts originate from the infundibular portion of the hair follicle thus explaining the interchangeable,[3] yet inaccurate, use of these two terms ...
Dr. Farhad Limonadi, Southern California neurosurgeon, presents Acoustic Neuroma Case Study #1, 49-year-old gentleman with enlargement of vestibular schwannoma tumor.
Definition of cistern in the Financial Dictionary - by Free online English dictionary and encyclopedia. What is cistern? Meaning of cistern as a finance term. What does cistern mean in finance?
Basilica Cistern: In some, like the great Basilica Cistern near Hagia Sophia called by the Turks the Yerebatan (Underground) Palace, old material was reused; in others, like the even more impressive Binbirdirek (Thousand and One Columns) cistern, new columns of unusually tall and slender proportions and new capitals of cubic form were…
A tissue stimulation method which uses wave-guiding principles to construct a focused point of stimulation at any location within a region of electrically excitable living tissue. The excitation is formed through the constructive interference of different frequency wave energies, traveling at frequency-dependent velocities, which coalesce at the stimulation point. Further energy is brought to the stimulation point through reflection(s) at the boundaries of the wave-guiding structure. The resulting excitation signal depends upon several factors, including pulse envelope and duration, allowable frequency range, and stimulation time.
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Neurovascular compression syndromes are usually caused by arteries that directly contact the cisternal portion of a cranial nerve. Not all cases of neurovascular contact are clinically symptomatic. The transition zone between the central and peripheral myelin is the most vulnerable region for symptomatic neurovascular compression syndromes. Trigeminal neuralgia (cranial nerve V) has an incidence of 4-20/100,000, a transition zone of 4 mm, with symptomatic neurovascular compression typically proximal. Hemifacial spasm (cranial nerve VII) has an incidence of 1/100,000, a transition zone of 2.5 mm, with symptomatic neurovascular compression typically proximal. Vestibular paroxysmia (cranial nerve VIII) has an unknown incidence, a transition zone of 11 mm, with symptomatic neurovascular compression typically at the internal auditory canal. Glossopharyngeal neuralgia (cranial nerve IX) has an incidence of 0.5/100,000, a transition zone of 1.5 mm, with symptomatic neurovascular compression typically ...
Symptoms, risks, surgical and non-surgical treatment | Dr. Newell has 25+ years of experience helping with hemifacial spasms. Hemifacial spasm is a neuromuscular disorder that causes frequent involuntary contractions to occur in the muscles on one side of the face
Epidermoid cysts are a relatively common occurrence for many people. Several people refer to epidermoid cysts as sebaceous cysts, but this is a common mistake. According to the Mayo Clinic, real sebaceous cysts are uncommon and originate from the sebaceous glands that lubricate hair and skin.. Usually painless, epidermoid cysts do not often require treatment. However, sometimes infection or appearance lead to people opting for removal. While there are certainly medical facilities equipped to handle the removal, many people opt for a more natural approach to healing. Here, we will discuss those options.. HOME REMEDIES FOR EPIDERMOID CYST REMOVAL. Fortunately, some home remedies can assist with the removal of a skin cyst. Home Remedy Hacks offer the following tips:. Aloe Vera. Aloe Vera has long been used as a soothing agent for various skin conditions. You may apply the sap from the plant directly to the cyst or for faster results; you can drink Aloe Vera juice.. Apple Cider Vinegar. The acetic ...
A 27-year-old man presented with bilateral testicular pain and enlargement of the right testis caused by a cystic mass. Histological examination of a frozen section at exploration excluded malignancy and the final diagnosis after local excision was benign epidermoid cyst. The patient remained well three years later. ...
... is a relatively painless neurological condition in which the muscles of one side of the face spasm uncontrollably.
... overview provided by Farhad Limonadi MD, neurosurgeon located in the Palm Springs, Rancho Mirage and Palm Desert areas of Southern California.
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Looking for online definition of Cerebromedullary cistern in the Medical Dictionary? Cerebromedullary cistern explanation free. What is Cerebromedullary cistern? Meaning of Cerebromedullary cistern medical term. What does Cerebromedullary cistern mean?
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Synonyms for suboccipital nerve in Free Thesaurus. Antonyms for suboccipital nerve. 155 synonyms for nerve: bravery, courage, spirit, bottle, resolution, daring, determination, guts, pluck, grit, fortitude, vigour, coolness, balls, mettle.... What are synonyms for suboccipital nerve?
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Mediante el Tratamiento Inmunobiológico Issels sin tratamientos convencionales adicionales. Remisión a largo plazo completa de un meningioma maligno y progresivo destructivo, parcialmente extirpado.
Treatment of Imagine having a jab of lightning-like pain shoot through your face when you brush your teeth or put on makeup. Sound excruciating? If you have trigeminal neuralgia, attacks of such pain are frequent and can often seem unbearable, You may initially experience short, mild attacks, but trigeminal neuralgia can progress, causing longer, more frequent bouts of searing pain. These painful attacks can be spontaneous, but they may also be provoked by even mild stimulation of your face, including brushing your teeth, shaving or putting on makeup. The pain of trigeminal neuralgia may occur in a fairly small area of your face, or it may spread rapidly over a wider area, Because of the variety of treatment options available, having trigeminal neuralgia doesnt necessarily mean youre doomed to a life of pain. Doctors usually can effectively manage trigeminal neuralgia, either with medications or surgery, Trigeminal Neuralgia, Trigeminal Neuralgia Causes, Trigeminal Neuralgia Definition, Trigeminal
The latest market report published by Credence Research, Ltd. "Trigeminal Neuralgia Treatment Market - Growth, Share, Opportunities, Pipeline Analysis, Competitive Analysis, and Forecast, 2017 - 2025," the trigeminal neuralgia treatment market was valued at US$ 46.53 Mn in 2016, and is expected to reach US$ 99.17 Mn by 2025, expanding at a CAGR of 7.60% from 2017 to 2025.. Browse the full report Trigeminal Neuralgia Treatment Market - Growth, Share, Opportunities, Competitive Analysis, and Forecast, 2017 - 2025 at http://www.credenceresearch.com/report/trigeminal-neuralgia-treatment-market. Market Insights. Trigeminal neuralgia is a chronic pain condition that affects the trigeminal nerve, which carries sensation from face to brain. According to the International Association for the Study of Pain the incidence of Trigeminal Neuralgia is 12 per 100,000 persons per year. The etiology includes the compression of blood vessels, degeneration of arteries, myelin sheath infiltration and idiopathy. ...
Headline: Bitcoin & Blockchain Searches Exceed Trump! Blockchain Stocks Are Next!. Trigeminal Neuralgia - Pipeline Review, H2 2016, provides an overview of the Trigeminal Neuralgia pipeline landscape. The report provides comprehensive information on the therapeutics under development for Trigeminal Neuralgia , complete with analysis by stage of development, drug target, mechanism of action (MoA), route of administration (RoA) and molecule type.. Browse more detail information about Trigeminal Neuralgia at: http://www.absolutereports.com/trigeminal-neuralgia-pipeline-review-h2-2016-10315975. The report also covers the descriptive pharmacological action of the therapeutics, its complete research and development history and latest news and press releases. Additionally, the report provides an overview of key players involved in therapeutic development for Trigeminal Neuralgia and features dormant and discontinued projects ...
Our Best Online Herbal Products meds treat brain Trigeminal Neuralgia Symptoms at you home without any side effects. Click here for Trigeminal Neuralgia Treatment and Trigeminal Neuralgia Causes by our company Herbal Care Products. After treat Trigeminal Neuralgia pain from our treatment you dont forget to thanks us ...
By a twist of fate I ran across a petition that at the time had less than a couple hundred signatures created by TNNME. This petition was to a place called The World Health Organization and they where asking that Trigeminal Neuralgia be added to a thing called a health topics list. This peeked my curiosity wanting to know what would happen if it was added, I found out that it would mean every place in the world would have to report to them any cases of Trigeminal Neuralgia which would give us much needed statistics as to how many people are affected along with funding for research and education. This sounded easy to accomplish cause after all Trigeminal Neuralgia was voted the #1 most painful condition known to man kind so how could they not add it... Well it seems its harder than anticipated cause with over 12 thousand signatures they still havent added us ...
Although a histologically benign and relatively uncommon tumor, otolaryngologists and neurosurgeons have maintained a lasting and deep-rooted fascination with vestibular schwannoma, also known as acoustic neuroma. Advancements in microsurgical technique, radiosurgery, and radiotherapy, coupled with an increased understanding of the natural history of the disease, have made modern management of this tumor considerably more complex. Concurrently, new controversies have added to the original debates among pioneering surgeons, with the pendulum swinging between conservatism and definitive cure ...
Choroid plexus papillomas are low grade tumors that arise from the intraventricular CSF-producing choroid plexus. Here we see the transition from the round bland nuclei and ample pink cytoplasm of the normal choroid plexus epithelium (bottom of image) to the dysplastic columnar epithelium of the papilloma (top of image) featuring nuclear crowding and mitotic activity…
TY - JOUR. T1 - Rapid growing cystic variant of choroid plexus papilloma in a fetal cerebral hemisphere. AU - Murata, M.. AU - Morokuma, S.. AU - Tsukimori, K.. AU - Hojo, S.. AU - Morioka, T.. AU - Hashiguchi, K.. AU - Sasaki, T.. AU - Wake, N.. PY - 2009/1/1. Y1 - 2009/1/1. UR - http://www.scopus.com/inward/record.url?scp=58149508221&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=58149508221&partnerID=8YFLogxK. U2 - 10.1002/uog.6262. DO - 10.1002/uog.6262. M3 - Letter. C2 - 19009522. AN - SCOPUS:58149508221. VL - 33. SP - 116. EP - 118. JO - Ultrasound in Obstetrics and Gynecology. JF - Ultrasound in Obstetrics and Gynecology. SN - 0960-7692. IS - 1. ER - ...
Trigeminal neuralgia is a chronic pain condition that affects the trigeminal nerve, which carries sensation from your face to your brain. If you have trigeminal neuralgia, even mild stimulation of your face - such as from brushing your teeth or putting on makeup - may trigger a jolt of excruciating pain. You may initially experience short, mild attacks. But trigeminal neuralgia can progress and cause longer, more-frequent bouts of searing pain. Trigeminal neuralgia affects women more often than men, and its more likely to occur in people who are older than 50.. Because of the variety of treatment options available, having trigeminal neuralgia doesnt necessarily mean youre doomed to a life of pain. Doctors usually can effectively manage trigeminal neuralgia with medications, injections or surgery. ...
Welcome to the Trigeminal Neuralgia Forum! Here you will find a wonderful group of people, who have TN, suspect they may have TN or are being currently being diagnosed. We are all patients, not doctors...
I have had symptons from trigeminal neuralgia for the past 5 years. Last April ina a 2 week period, every day the pain escalated. I lost 9 pounds. I am on carbomazapan, which stopped the lighteninglike...
Injury or damage to trigeminal nerve causes trigeminal neuralgia. It is also known as Prosopalgia or Fothergills Disease. Know the Causes, Symptoms, Treatment-Surgery.
Trigeminal neuralgia (TN) is a painful, chronic condition that affects the fifth (5th) cranial nerve. Also called tic douloureux, TN is a form of neuropathic
Trigeminal neuralgia (TN) is an excruciatingly painful disorder which affects about one in a thousand people. Patients describe the pain of TN as an electric shock going through the face. Eating and talking often triggers the pain, so some patients become malnourished and depressed. The pain is brief, but can be so frequent and severe…
Trigeminal neuralgia diagnosis (costs for program #218545) ✔ University Hospital Marburg UKGM ✔ Department of Neurology ✔ BookingHealth.com
Trigeminal neuralgia diagnosis (costs for program #183797) ✔ University Hospital Marburg UKGM ✔ Department of Neuropathology ✔ BookingHealth.com
Case history A 20 year old, unmarried woman of Indian origin, with diagnosis of trigeminal neuralgia, was presented to... Read more. ...
Langone physicians work with you to develop a trigeminal neuralgia recovery plan based on the treatment you received and your needs. Read more.
Care guide for Trigeminal Neuralgia (Inpatient Care). Includes: possible causes, signs and symptoms, standard treatment options and means of care and support.
Holding on the name of a condition shed never heard of, she consulted a neurosurgeon who confirmed Diane was in fact suffering from Trigeminal Neuralgia.
Free Online Library: Ultrasound-Guided Intervention for Treatment of Trigeminal Neuralgia: An Updated Review of Anatomy and Techniques. by Pain Research and Management; Health, general
Statistics about Trigeminal neuralgia as a medical condition including prevalence, incidence, death rates, and social and hospital statistics.
As solid as a rock - the petrous bone as a source of DNA for the comparison of CE-and MPS-based forensic identification of challenging cranial bones
Trigeminal neuralgia and hemifacial spasm. Find the best specialists in Trigeminal neuralgia and hemifacial spasm in United Kingdom and solve your queries by asking the experts.
... ,Hemifacial Spasm, ENDOSCOPIC MICROVASCULAR DECOMPRESSION - MVD FOR TRIGEMINAL NEURALGIA OR HEMIFACIAL SPASMS, ENDOSCOPIC Microvascular decompression MVD are excellent and once done patient is relieved of the pain or facial spasms , Prof. Shahzad Shams presently works as Head and Professor of Neurosurgery Department at Lahore General Hospital, LGH, Lahore. ENDOSCOPIC MINIMALLY INVASIVE KEYHOLE SURGERY

Cerebellopontine angle - WikipediaCerebellopontine angle - Wikipedia

The cerebellopontine angle is also the site of a set of neurological disorders known as the cerebellopontine angle syndrome. ... The cerebellopontine angle is the site of the cerebellopontine angle cistern one of the subarachnoid cisterns that contains ... The cerebellopontine angle is formed by the cerebellopontine fissure. This fissure is made when the cerebellum folds over to ... The angle formed in turn creates a subarachnoid cistern, the cerebellopontine angle cistern. The pia mater follows the outline ...
more infohttps://en.wikipedia.org/wiki/Cerebellopontine_angle

Cerebellopontine angle syndrome - WikipediaCerebellopontine angle syndrome - Wikipedia

The cerebellopontine angle cistern is a subarachnoid cistern formed by the cerebellopontine angle that lies between the ... The cerebellopontine angle syndrome is a distinct neurological syndrome of deficits that can arise due to the closeness of the ... Lesions in the area of cerebellopontine angle cause signs and symptoms secondary to compression of nearby cranial nerves, ... Nedzelski JM (October 1983). "Cerebellopontine angle tumors: bilateral flocculus compression as cause of associated oculomotor ...
more infohttps://en.wikipedia.org/wiki/Cerebellopontine_angle_syndrome

Classification of Meningiomas in the Cerebellopontine Angle | SpringerLinkClassification of Meningiomas in the Cerebellopontine Angle | SpringerLink

Meningiomas represent the second most common type of neoplasm of the cerebellopontine angle (CPA). Their relationship to ... Schaller B (2003a) Cerebellopontine angle surgery. Part 1: General remarks. HNO 51:284-295CrossRefPubMedGoogle Scholar ... Schaller B (2003b) Cerebellopontine angle surgery. Part 2: Specific remarks. HNO 51:375-385CrossRefPubMedGoogle Scholar ... Hitselberger WE, Gardner G (1968) Other tumors of the cerebellopontine angle. Arch Otolaryngol 88:712-714CrossRefPubMedGoogle ...
more infohttps://link.springer.com/chapter/10.1007/978-94-017-7224-2_5

Bilateral cerebellopontine angle metastatic melanoma: a case report. - Free Online LibraryBilateral cerebellopontine angle metastatic melanoma: a case report. - Free Online Library

Bilateral cerebellopontine angle metastatic melanoma: a case report.(Disease/Disorder overview) by Ear, Nose and Throat ... angle+metastatic+melanoma%3a+a+case+report.-a0167254180. *APA style: Bilateral cerebellopontine angle metastatic melanoma: a ... MLA style: "Bilateral cerebellopontine angle metastatic melanoma: a case report.." The Free Library. 2007 Vendome Group LLC 22 ... Rare tumors of the cerebellopontine angle. Otolaryngol Head Neck Surg 1980;88(5):555-9. (4) Arriaga MA, Lo WW, Brackmann DE. ...
more infohttps://www.thefreelibrary.com/Bilateral+cerebellopontine+angle+metastatic+melanoma%3A+a+case+report-a0167254180

Clinical Imaging of the Cerebello-Pontine Angle, Book by Anton Valavanis (Paperback) | chapters.indigo.caClinical Imaging of the Cerebello-Pontine Angle, Book by Anton Valavanis (Paperback) | chapters.indigo.ca

Buy the Paperback Book Clinical Imaging of the Cerebello-Pontine Angle by Anton Valavanis at Indigo.ca, Canadas largest ... General Principles for the CT Diagnosis of Cerebello-Pontine Angle Lesions.- Pathology of the Cerebello-Pontine Angle.- ... Vascular Lesions of the Cerebello-Pontine Angle.- A. Berry Aneurysms of the Cerebello-Pontine Angle.- 1 General Considerations ... Secondary Tumors of the Cerebello-Pontine Angle.- Magnetic Resonance Imaging of the Cerebello-Pontine Angle.- MRI Examination ...
more infohttps://www.chapters.indigo.ca/en-ca/books/clinical-imaging-of-the-cerebello/9783642712067-item.html

Clinical Imaging of the Cerebello-Pontine Angle | Springer for Research & DevelopmentClinical Imaging of the Cerebello-Pontine Angle | Springer for Research & Development

Angle masses which are very small and difficult to detect frequently produc ... The cerebello-pontine angle has always posed a challenge to the neurosurgeon, the otoneurosurgeon, and the neuroradiologist. ... The cerebello-pontine angle has always posed a challenge to the neurosurgeon, the otoneurosurgeon, and the neuroradiologist. ... General Principles for the CT Diagnosis of Cerebello-Pontine Angle Lesions Anton Valavanis, Othmar Schubiger, Thomas P. Naidich ...
more infohttps://rd.springer.com/book/10.1007%2F978-3-642-71204-3

Neurosurgical Focus Volume 36 Issue v1supplement: Video Atlas - Surgical Approaches to the Cerebellopontine Angle (2014)Neurosurgical Focus Volume 36 Issue v1supplement: Video Atlas - Surgical Approaches to the Cerebellopontine Angle (2014)

An endoscopic assisted retrosigmoid approach to the cerebello-pontine angle for resection of an epidermoid cyst ... Volume 36 (2014): Issue v1supplement (Jan 2014): Video Atlas - Surgical Approaches to the Cerebellopontine Angle. in ... Retrosigmoid approach for resection of cerebellopontine angle meningioma and decompression of the trigeminal nerve ... A stepwise illustration of the retrosigmoid approach for resection of a cerebellopontine meningioma ...
more infohttps://thejns.org/focus/abstract/journals/neurosurg-focus/36/v1supplement/neurosurg-focus.36.issue-v1supplement.xml

Cerebellopontine angle lipoma | Radiology Case | Radiopaedia.orgCerebellopontine angle lipoma | Radiology Case | Radiopaedia.org

the differential would include a dermoid- but these are midline leison and very rare at CP angle. However secondary CP angle ... Cerebellopontine angle lipoma comprise 10% of all intracranial lipoma. ... Cerebellopontine angle lipoma comprise 10% of all intracranial lipoma. the differential would include a dermoid- but these are ... A well defined right cerebellopontine angle mass is seen that is hyperintense on T1 and T2, it is completely suppressed on the ...
more infohttps://radiopaedia.org/cases/cerebellopontine-angle-lipoma?lang=us

Cystic meningioma: cerebellopontine angle | Radiology Case | Radiopaedia.orgCystic meningioma: cerebellopontine angle | Radiology Case | Radiopaedia.org

MRI through the posterior fossa demonstrate an extra-axial mass in the right cerebellopontine angle with a prominent central ... An extra-axial mass in the right cerebellopontine angle with a prominent central cyst. ...
more infohttps://radiopaedia.org/cases/cystic-meningioma-cerebellopontine-angle

MRI screening of the cerebellopontine angle and inner ear with fast spin-echo T2 techniqueMRI screening of the cerebellopontine angle and inner ear with fast spin-echo T2 technique

... Kovacsovics, Bea Linköping ... In patients with unilateral hearing loss and dizziness it is important to rule out a cerebellopontine angle process. This is ... but contrast is necessary for differential diagnostic purposes in patients with alterations in the cerebellopontine angle or in ... FSE T2 weighted images can reliably differentiate between patients with and without pathologies of the cerebellopontine angle. ...
more infohttp://liu.diva-portal.org/smash/record.jsf?pid=diva2:290137

Posterior fossa craniotomy for lesions of the cerebellopontine angle in: Journal of Neurosurgery Volume 78 Issue 3 (1993)Posterior fossa craniotomy for lesions of the cerebellopontine angle in: Journal of Neurosurgery Volume 78 Issue 3 (1993)

cerebellopontine angle; craniotomy; operative exposure; surgical technique; instrumentation Page Count: 508-509 ... Artists drawing showing creation of a free bone flap to gain access to the right cerebellopontine angle. A No. 3 Penfield ... Artists drawing showing creation of a free bone flap to gain access to the right cerebellopontine angle. A No. 3 Penfield ... A safe technique is described for performing a lateral posterior fossa craniotomy to gain access to the cerebellopontine angle ...
more infohttps://thejns.org/abstract/journals/j-neurosurg/78/3/article-p508.xml?rskey=bkMjgv&result=4

Virtual Cisternoscopy: 3D MRI Models of the Cerebellopontine Angle for Lesions Related to the Cranial NervesVirtual Cisternoscopy: 3D MRI Models of the Cerebellopontine Angle for Lesions Related to the Cranial Nerves

... James D. Rabinov ... Naganawa S, Koshikawa T, Fukatsu H, Ishigaki T, Fukuta T. MR Cisternography of the cerebellopontine angle: comparison of three- ... The authors present a novel magnetic resonance imaging technique for visualizing structures of the cerebellopontine angle from ... in the cerebellopontine angle (CPA). Three patients with symptomatology related to CNs VII and VIII underwent MRI examinations ...
more infohttp://pubmedcentralcanada.ca/pmcc/articles/PMC1151677/

Evaluating the utility of a scoring system for lipomas of the cerebellopontine angle | springermedizin.deEvaluating the utility of a scoring system for lipomas of the cerebellopontine angle | springermedizin.de

Cerebellopontine angle (CPA) lipomas are elusive lesions representing 0.1-1.5% of intracranial tumors, up to 10% of ... Zamani AA (2000) Cerebellopontine angle tumors: role of magnetic resonance imaging. Top Magn Reson Imaging 11:98-107 PubMed ... Levin JM, Lee JE (1987) Hemifacial spasm due to cerebellopontine angle lipoma: case report. Neurology 37:337-339 PubMedCrossRef ... Lakshmi M, Glastonbury CM (2009) Imaging of the cerebellopontine angle. Neuroimaging Clin N Am 19:393-406 PubMedCrossRef ...
more infohttps://www.springermedizin.de/evaluating-the-utility-of-a-scoring-system-for-lipomas-of-the-ce/12012202

Most recent papers with the keyword cerebellopontine angle lymphoma | Read by QxMDMost recent papers with the keyword cerebellopontine angle lymphoma | Read by QxMD

... lymphoma presenting as bilateral cerebellopontine angle lesions. Imaging showed bilateral cerebellopontine angle lesions and ... and rarely occurs in the cerebello-pontine angle. We report a rare case of primary CNS lymphoma involving the right cerebello- ... Imaging of cerebellopontine angle lesions: an update. Part 2: intra-axial lesions, skull base lesions that may invade the CPA ... Cerebellopontine angle and intracanalicular masses mimicking vestibular schwannomas.. Audrey P Calzada, John L Go, Donald L ...
more infohttps://www.readbyqxmd.com/keyword/158663

Cerebellopontine Angle Tumor disease: Malacards - Research Articles, Drugs, Genes, Clinical TrialsCerebellopontine Angle Tumor disease: Malacards - Research Articles, Drugs, Genes, Clinical Trials

MalaCards based summary : Cerebellopontine Angle Tumor, also known as neoplasm of the cerebellopontine angle, is related to ... MalaCards integrated aliases for Cerebellopontine Angle Tumor:. Name: Cerebellopontine Angle Tumor 12 15 71 ... Cerebellopotine Angle MalaCards organs/tissues related to Cerebellopontine Angle Tumor:. 40 Brain, Bone, Salivary Gland, Testes ... Articles related to Cerebellopontine Angle Tumor:. (show top 50) (show all 189) #. Title. Authors. PMID. Year. ...
more infohttps://www.malacards.org/card/cerebellopontine_angle_tumor

Primary Glioblastoma of the Cerebellopontine Angle: Case Report and Review of the LiteraturePrimary Glioblastoma of the Cerebellopontine Angle: Case Report and Review of the Literature

... Article information. J Korean ... Wu B, Liu W, Zhu H, Feng H, Liu J. Primary glioblastoma of the cerebellopontine angle in adults. J Neurosurg 114:1288-1293. ... Glioblastoma presenting as an extraaxial mass of cerebellopontine angle (CPA) is very rare in adults. We report a rare case of ... Keywords: Glioblastoma multiforme; Cerebellopontine angle; Extraaxial INTRODUCTION. Glioblastoma multiforme (GBM) is the most ...
more infohttps://www.jkns.or.kr/journal/view.php?viewtype=pubreader&number=7007

Cerebellopontine Angle Primitive Neuroectodermal disease: Malacards - Research Articles, Drugs, Genes, Clinical TrialsCerebellopontine Angle Primitive Neuroectodermal disease: Malacards - Research Articles, Drugs, Genes, Clinical Trials

Articles related to Cerebellopontine Angle Primitive Neuroectodermal:. #. Title. Authors. PMID. Year. 1. Cerebellopontine angle ... MalaCards based summary : Cerebellopontine Angle Primitive Neuroectodermal, also known as cerebellopontine angle primitive ... MalaCards integrated aliases for Cerebellopontine Angle Primitive Neuroectodermal:. Name: Cerebellopontine Angle Primitive ... Pathways related to Cerebellopontine Angle Primitive Neuroectodermal according to GeneCards Suite gene sharing:. #. Super ...
more infohttps://www.malacards.org/card/cerebellopontine_angle_primitive_neuroectodermal

Cerebellopontine angle arachnoid cyst containing ectopic choroid plexus--case report. - Physiology, Anatomy and GeneticsCerebellopontine angle arachnoid cyst containing ectopic choroid plexus--case report. - Physiology, Anatomy and Genetics

This is the first reported case of ectopic choroid plexus at the cerebellopontine angle in an adult. We present the case and ... We present a rare and interesting case of a cerebellopontine angle cyst containing ectopic choroid plexus tissue in a 26 year- ... Cerebellopontine angle arachnoid cyst containing ectopic choroid plexus--case report. Singleton WGB., Lawrence T., Green AL., ... This is the first reported case of ectopic choroid plexus at the cerebellopontine angle in an adult. We present the case and ...
more infohttps://www.dpag.ox.ac.uk/publications/141857

Cerebellopontine angle primitive neuroectodermal tumor mimicking trige by Saad Akhtar Khan, Badar Uddin Ujjan et al."Cerebellopontine angle primitive neuroectodermal tumor mimicking trige" by Saad Akhtar Khan, Badar Uddin Ujjan et al.

Primary cerebellopontine angle (CPA) PNET is an extremely rare entity. It is important to have knowledge of this pathology and ... Primary cerebellopontine angle (CPA) PNET is an extremely rare entity. It is important to have knowledge of this pathology and ... Khan, S., Ujjan, B., Salim, A., Shahzad Shamim, M. (2016). Cerebellopontine angle primitive neuroectodermal tumor mimicking ...
more infohttps://ecommons.aku.edu/pakistan_fhs_mc_surg_surg/483/

Cerebellopontine angle cistern | Radiology Reference Article | Radiopaedia.orgCerebellopontine angle cistern | Radiology Reference Article | Radiopaedia.org

The cerebellopontine angle cistern, also known as the pontocerebellar cistern, is a triangular CSF-filled subarachnoid cistern ... Cerebellopontine Angle Tumours. Read relevant article. *2. Balasubramanian T. Cerebello-Pontine Angle Tumours ... cerebellopontine angle masses * acoustic schwannomas (nearly 80% of all CP angle tumors) ... The cerebellopontine angle cistern, also known as the pontocerebellar cistern, is a triangular CSF-filled subarachnoid cistern ...
more infohttps://images.radiopaedia.org/articles/cerebellopontine-angle-cistern?lang=us

MedPix Case - Meningioma, Cerebellopontine angle,  WHO Grade 2MedPix Case - Meningioma, Cerebellopontine angle, WHO Grade 2

... enhancing cerebello-pontine-angle mass extending from the right tentorial leaf into the sinodural angle with a moderate amount ...
more infohttps://medpix.nlm.nih.gov/case?id=19589dcb-1b9b-44b3-8d41-529f40742bee&quiz=t

Top Cerebellopontine Angle Syndrome Hospitals in Bangalore  | CredihealthTop Cerebellopontine Angle Syndrome Hospitals in Bangalore | Credihealth

Get guidance from medical experts to select best cerebellopontine angle syndrome hospital in Bangalore ... View details of top cerebellopontine angle syndrome hospitals in Bangalore. ... Best hospitals for cerebellopontine-angle-syndrome in Bangalore List of best hospitals for cerebellopontine-angle-syndrome in ... Need help in choosing the right cerebellopontine angle syndrome hospital? The medical expert will guide you for all hospital ...
more infohttps://www.credihealth.com/hospitals/bangalore/cerebellopontine-angle-syndrome

Surgical Outcomes of Cerebellopontine angle Tumors in 50 CasesSurgical Outcomes of Cerebellopontine angle Tumors in 50 Cases

To report our experience with a large series of surgical procedures for removal of cerebellopontine angle (CPA) tumors using ... Surgical Outcomes of Cerebellopontine angle Tumors in 50 Cases. Article 5, Volume 27, Issue 1, January and February 2015, Page ... "Surgical Outcomes of Cerebellopontine angle Tumors in 50 Cases". Iranian Journal of Otorhinolaryngology, 27, 1, 2015, 29-34. ... To report our experience with a large series of surgical procedures for removal of cerebellopontine angle (CPA) tumors using ...
more infohttp://ijorl.mums.ac.ir/article_3436.html

Iridial angle | definition of iridial angle by Medical dictionaryIridial angle | definition of iridial angle by Medical dictionary

... iridial angle explanation free. What is iridial angle? Meaning of iridial angle medical term. What does iridial angle mean? ... Looking for online definition of iridial angle in the Medical Dictionary? ... pontine angle. Cerebellopontine angle.. prophy angle. In dentistry, a wheel containing pieces of wire. It is used for cleaning ... Syn. viewing angle.. wetting angle See contact angle.. refracting angle See angle, prism.. Fig. A9 Angle alpha ...
more infohttps://medical-dictionary.thefreedictionary.com/iridial+angle
  • Cerebellopontine Angle Primitive Neuroectodermal, also known as cerebellopontine angle primitive neuroectodermal tumor , is related to retroperitoneal neuroblastoma and ectomesenchymoma . (malacards.org)
  • Cerebellopontine angle primitive neuroectodermal tumor mimicking trige" by Saad Akhtar Khan, Badar Uddin Ujjan et al. (aku.edu)
  • Vascular loops at the cerebellopontine angle: Is there a correlation with tinnitus? (mendeley.com)
  • The purpose of this study was to investigate the causative effect of the vascular loop and compression of the vestibulocochlear nerve at the cerebellopontine angle in patients with unexplained tinnitus. (mendeley.com)
  • A safe technique is described for performing a lateral posterior fossa craniotomy to gain access to the cerebellopontine angle. (thejns.org)
  • The anatomic type of vascular loop, the vascular contact, and the angulation of the vestibulocochlear nerve at the cerebellopontine angle (CPA) were evaluated by 2 experienced neuroradiologists. (mendeley.com)
  • Primary cerebellopontine angle (CPA) PNET is an extremely rare entity. (aku.edu)
  • We report a rare case of a primary central nervous system lymphoma (PCNSL) of the cerebellopontine angle (CPA) with infiltration into the pyramidal tract that initially presented as neurolymphomatosis (NL) of the acoustic nerve. (readbyqxmd.com)
  • For example, involvement of CN V from a cerebellopontine mass lesion often results in loss of the ipsilateral (same side of the body) corneal reflex (involuntary blink). (wikipedia.org)
  • With Cerebellopontine Angle syndrome, why might you see cerebellar ataxia on the side of lesion? (flashcardmachine.com)
  • 3 , 6 The purpose of this study is to show that high-resolution 3D models based on MRI data can produce an interactive model to aid in planning the neurosurgical approach to vascular and neoplastic lesions affecting the CNs in the cerebellopontine angle (CPA). (pubmedcentralcanada.ca)
  • The inner ear labyrinth is composed of several interconnecting membranous structures encased in cavities of the temporal bone, and the cerebellopontine angle contains fragile structures such as meningeal folds, the choroid plexus (CP), and highly variable vascular formations. (frontiersin.org)
  • Angle masses which are very small and difficult to detect frequently produce symptoms, but may remain silent while growing to exceptional size. (indigo.ca)
  • In reviewing more than 1,000 cases of cerebellopontine angle (CPA) tumor, Brackmann and Bartels found only 3 lesions (0.2%) of metastatic origin. (thefreelibrary.com)
  • In patients with unilateral hearing loss and dizziness it is important to rule out a cerebellopontine angle process. (diva-portal.org)
  • We present the case of a 63-year-old male who underwent surgical resection of a poorly differentiated small cell carcinoma, likely from a small intestinal primary tumor that metastasized to the cerebellopontine angle CPA. (duhnnae.com)
  • Primary central nervous system lymphoma (PCNSL) is an uncommon extranodal manifestation of non-Hodgkin's lymphoma with those presenting at the cerebellopontine angle (CPA) being rare presentations with limited reported cases in the literature. (readbyqxmd.com)
  • T-cell primary leptomeningeal lymphoma in cerebellopontine angle. (readbyqxmd.com)
  • Cerebellopontine angle involvement in the primary T-cell lymphoma is exceptional. (readbyqxmd.com)
  • Primary infratentorial GBM is an uncommon disease in adults and rarely found in cerebellopontine angle (CPA), especially 8 , 10) . (jkns.or.kr)
  • This is the first reported case of ectopic choroid plexus at the cerebellopontine angle in an adult. (ox.ac.uk)
  • acromial angle the subcutaneous bony point at which the lateral border becomes continuous with the spine of the scapula. (thefreedictionary.com)
  • It is the bony boundary of the cerebellopontine angle. (mdanderson.org)
  • 12 A brain stem cancer that is characterized by neoplasms in the fossa located in cerebellopotine angle. (malacards.org)
  • Angle lesions typically arise in conjunction with vital neurovascular structures, and often displace these away from their expected positions. (indigo.ca)
  • The use of gadolinium contrast could be avoided in most of the cases, but contrast is necessary for differential diagnostic purposes in patients with alterations in the cerebellopontine angle or in doubtful cases. (diva-portal.org)
  • the differential would include a dermoid - but these are midline leison and very rare at CP angle. (radiopaedia.org)
  • Since the arteries, veins, and nerves that traverse the angle are fine structures, the neuroradiologist must perform studies of the highest quality to do his job effectively. (indigo.ca)