Posterior skull base or anterior skull base. Medical search. Frequent questions

Results The FTOZ TCA represented a wide access to the anterior, middle, and posterior fossa. (thieme-connect.de)
The long-term consequences of a persistent defect in the anterior cranial fossa dissuade many physicians from using this method of treatment. (medscape.com)
The Posterior Fossa ( fossa cranii posterior ). (bartleby.com)
The posterior fossa is the largest and deepest of the three. (bartleby.com)
Additionally, a poorly-defined region termed the central base of skull is often used clinically to denote the region centered on the pituitary fossa and surrounding structures. (radiopaedia.org)
3) resection of tumor of the brain stem of the posterior fossa in the interpeduncular cistern. (codapedia.com)
Due to the vertical limitation of the ETOA, some lesions of the anterior cranial fossa are difficult to access. (thejns.org)
23. Base of the skull - anterior cranial fossa. (edu.pl)
24. Base of the skull - middle cranial fossa. (edu.pl)
25. Base of the skull - posterior cranial fossa. (edu.pl)
Surgical exposure of the extracranial surface of the floor of the middle and posterior cranial fossa is difficult using the available techniques of skull base surgery. (mssm.edu)
The Eustachian tube is divided between the base of skull and Rosenmüller's fossa. (mssm.edu)
Digastric fossa: for anterior belly of digastric 3. (slideshare.net)
Mylohyoid line: extends posterior from fossa 5. (slideshare.net)
Complex high-impact fractures may result in communication between the anterior cranial fossa and the facial or sinus structures. (medscape.com)
The subcranial approach is a title applied by Joram Raveh of Bern, Switzerland, to a technique in which the anterior skull base is approached directly by disarticulating the nasal root and glabella to directly access the frontal and ethmoid sinuses and the anterior fossa. (medscape.com)
The technique, a logical extension of previously existing approaches, was originally developed by Raveh for skull base access to tumors that involved the paranasal sinuses and anterior fossa. (medscape.com)
This approach allows wide exposure of the anterior fossa, cribriform plates, foveae ethmoidale, and orbits with minimal, if any, frontal lobe retraction. (medscape.com)
The subcranial approach is used to manage complex fractures of the anterior skull base that may include fractures of the floor of the anterior fossa and/or the posterior wall of the frontal sinuses. (medscape.com)
Most fractures of the nasal root, frontal sinuses, and anterior fossa that are severe enough to benefit from this approach are the result of high-impact trauma (eg, motor vehicle accidents, industrial accidents). (medscape.com)

Dorsal view of skull and a lateral and a medial view of the right lower jaw to show points between which measurements of the skull were taken. (gutenberg.org)
21. Lateral and posterior views of the skull. (edu.pl)
This projection is used to evaluate for medial and lateral displacements of skull fractures, and radiopaque foreign bodies 2 . (radiopaedia.org)
Most patients had undergone primary RT using a two-dimensional technique with two lateral opposing faciocervical fields in the first treatment phase, followed by two lateral opposing fields in the second phase to cover the nasopharynx, matched with a single anterior cervical field to cover the neck. (hindawi.com)
Perpendicular plate: forms posterior part of lateral wall of nasal cavity 2. (slideshare.net)
The lateral aspect of the skull can be divided into three regions: The temporal region, which we will cover in detail in this section. (anatomysystem.com)
There are three semicircular canals that are oriented at nearly right angles to one another and are named the anterior (superior), lateral (horizontal) and posterior canals. (cdc.gov)

The medial thalamus (MThal), anterior cingulate cortex (ACC) and striatum play important roles in affective-motivational pain processing and reward learning. (elifesciences.org)

When combined with an anterior clinoidectomy, it allowed for significant and safe internal carotid artery mobilization. (thieme-connect.de)
One patient experienced a posterior nose bleed from the posterior nasal artery. (upmc.com)
The position of the target as well as its relationships with surrounding neurovascular structures (olfactory bulb and anterior ethmoidal artery) guided the creation of a patient-specific roadmap. (surgicalneurologyint.com)
The posterior ethmoidal artery runs between the planum and the cribriform plate, while the anterior ethmoidal artery travels just behind the frontal sinus recess. (neurosurgicalatlas.com)
Outpouching of BASILAR ARTERY at the base of the skull. (bvsalud.org)
The basilar artery is the most important artery in the posterior cerebral circulation. (bvsalud.org)

Small-caliber low velocity bullets may intersect skull base, causing significant damage to the brain and a communication between endocranium and paranasal sinuses. (surgicalneurologyint.com)
Further, presence of hyper-pneumatized paranasal sinuses or the skull base weakens the bone and predisposes to development of spontaneous defects and further fistulas. (springeropen.com)

[ 6 ] A CT scan better depicts the remodeling or erosion of the bony skull base, while an MRI scan better depicts the soft-tissue planes (including the interface of the tumor and soft tissues) and the presence of perineural and perivascular tumors. (medscape.com)
2) The bony labyrinth is joined to the rest of the skull by fibrous tissue only. (cdc.gov)

The most frequent radiographic findings were residual anterior and posterior ethmoid cells or septations, found in 65% of sides and 75% of patients. (unboundmedicine.com)
A large percentage of the patients demonstrated residual ethmoid cells present on the lamina papyracea and skull base, with a lower number found posterior to the middle turbinate basal lamella. (unboundmedicine.com)
Adaptation of this technique to trauma progressed gradually through the transethmoidal approach to the skull base to the more extensive debridement of the frontal and ethmoid areas. (medscape.com)
The skull base comprises parts of the frontal, ethmoid, sphenoid, occipital and temporal bones. (anatomysystem.com)

METHODS: Between January 1, 2013, and September 6, 2014, 597 skull base computed tomography scans were performed to evaluate inner ear disease in patients with no history of paranasal sinus disease or endonasal surgery. (unifesp.br)
Thus, a preoperative computed tomography scan could improve surgical procedures that involve removal of the anterior clinoid process. (unifesp.br)
The unusual three-dimensional preservation of the specimen permitted computed tomography (CT) scanning of individual braincase elements as well as the entire reassembled skull. (peerj.com)

In the 3 cases of anterior clinoidal meningioma, anterior clinoidectomy was performed easily and safely, and manipulation of the extended dural margin and origin dura mater was possible. (thejns.org)
A network of various internal vertebral venous blood vessels of the epidural sinuses (Batson's plexus) passes between the dura mater and the posterior longitudinal ligament. (anatomy.app)

Background Advances in skull base surgery have increased the need for a detailed understanding of skull base anatomy and its intrinsic relationship to surrounding structures. (thieme-connect.de)
BACKGROUND: The anterior clinoid process (ACP) is surrounded by a complex anatomy variations include pneumatization and the formation of bone bridges with the middle and posterior clinoid, which complicate surgery. (unifesp.br)
Human Skull From Different Sides diagram and chart - Human body anatomy diagrams and charts with labels. (anatomysystem.com)

Behind the optic foramen the anterior clinoid process is directed backward and medialward and gives attachment to the tentorium cerebelli. (bartleby.com)
The Towne view is an angled anteroposterior radiograph of the skull and visualizes the petrous part of the pyramids , the dorsum sellae and the posterior clinoid processes , which are visible in the shadow of the foramen magnum . (radiopaedia.org)
The base width and length of the ACP, complete carotid-clinoid foramen and sella turcica bridge, and sphenoid sinus pneumatization volume were assessed. (unifesp.br)

This is an injury to the front part of your skull which includes your sinuses (the air spaces behind your nose), nasal cavity (the space between your nose and mouth), teeth, jawbone, and parts of your brain. (dentalreach.today)
These types of fractures include posterior wall fractures of the frontal sinuses, fractures through the foveae ethmoidale, and fractures through the cribriform plate. (medscape.com)
The anterior compartment of the skull base, which houses the eye sockets and sinuses, is prone to meningioma, olfactory neuroblastoma and paranasal sinus cancer. (breathe-ent.com)

The anterior fontanelle is the most prominent in the midline portion of the skull. (contemporarypediatrics.com)
A corresponding posterior fontanelle lies in the midline at the confluence of the lambdoid sutures. (contemporarypediatrics.com)
Paired palatine processes meet at midline to form anterior 2/3 of hard palate, bounded by dental arch of maxilla 2. (slideshare.net)

Deformity of the skull as a result of compressive forces in utero may be caused by multiple births or oligohydramnios, which may limit the ability of the fetus to reposition itself and avoid prolonged pressure in one area of the cranial vault. (contemporarypediatrics.com)

This vein also has a common trunk into which drains the anterior branch of the retromandibular vein, the facial vein, and the lingual vein. (definitions.net)

Greater and lesser palatine foramina (for palatine nerves and arteries) and posterior nasal spine Vomer 1. (slideshare.net)
The fibers of the posterior longitudinal ligament form a thick band between the vertebral pedicles, especially in the lower thoracic and lumbar regions of the spine. (anatomy.app)
Also, the posterior longitudinal ligament increases the overall stability of the spine during flexion. (anatomy.app)
Charts based on injection of local anesthetics into single dorsal root ganglia show bands of hypalgesia to be continuous longitudinally from the periphery to the spine. (medscape.com)

The base of the skull (or skull base ) forms the floor of the cranial cavity and separates the brain from the structures of the neck and face. (radiopaedia.org)
1. Johannes Lang. Skull Base and Related Structures. (radiopaedia.org)
The high level of detail enables description of the main arterial, venous and nerve canals of the skull, and other perichondrally ossified endocranial structures such as the palatoquadrate articulations, the endocranial cavity and the inner ear cavities. (plos.org)
This allows control of the major neurovascular structures up to their entrance at the skull base. (mssm.edu)

In patients with large dural defects of the anterior and ventral skull base after endonasal skull base surgery, there is a significant risk of a postoperative cerebrospinal fluid leak after reconstruction. (upmc.com)
Its use has resulted in a sharp decrease in the incidence of postoperative cerebrospinal fluid leaks after endonasal skull base surgery and is recommended for the reconstruction of large dural defects and when postoperative radiation therapy is anticipated. (upmc.com)
adominal fat graft with repair of anterior skull base cerebrospinal fluid leak with nasoseptal vasculurized pedicle flap the other sureon is not billing his part. (codapedia.com)
Cerebrospinal fluid (CSF) fistulas are classified based on their etiology into congenital and acquired fistulas. (springeropen.com)

Deformity of the skull in infants may develop from conditions such as craniosynostosis or from mechanical forces that put pressure on the malleable cranial bones. (contemporarypediatrics.com)
The normal newborn's skull consists of several membranous bones that are joined by sutures ( Figure 1 ). (contemporarypediatrics.com)
The fontanelles (intersections of 2 or more sutures) provide space between the developing bones, allowing for skull changes (called molding) during parturition and for rapid growth of the brain during infancy. (contemporarypediatrics.com)
Paired anterolateral fontanelles lie on either side of the skull directly below the anterior fontanelle, and paired posterolateral fontanelles lie between the squamosal, parietal, and occipital bones. (contemporarypediatrics.com)
3 Premature fusion of 1 or more sutures (craniosynostosis) produces characteristic deformities of the skull that may be confused with deformational or positional plagiocephaly, in which the sutures remain patent but the bones are deformed. (contemporarypediatrics.com)
To pass the test, the student must provide a basic answer to each of the three questions asked (BONES, JOINTS, SKULL). (edu.pl)
Learning objectives  Know the different bones of the skull and face? (slideshare.net)
Bones making bridge of nose palpable on anterior surfaces 2. (slideshare.net)
This can lead to fractures of the bones in the skull, jaw, neck, and dentition. (dentalreach.today)
The face is referred to as all skull bones fronto-caudally connected to the cerebral cranium. (anatomysystem.com)
Additionally, the CT data served as the basis for a new three-dimensional reconstruction of the skull, in which minor damage was repaired and the preserved bones digitally rearticulated. (peerj.com)

It begins in the posterior compartment of the jugular foramen, at the base of the skull. (definitions.net)

The use of prophylactic antibiotics in patients incurring skull base injuries during endoscopic sinus surgery has not been studied in a randomized controlled fashion. (medscape.com)
The HBF is a versatile and reliable endoscopic reconstructive technique for defects of the anterior, middle, clival, and parasellar skull base. (upmc.com)
However, it is also excellent for the practitioner who wants to get a succinct update on the latest, cutting-edge knowledge in rhinology, allergy, and endoscopic skull base surgery. (pluralpublishing.com)
In the past decade, the endoscopic transnasal technique has been broadly applied as a feasible and less invasive approach to the skull base. (surgicalneurologyint.com)
The adaptability of the endoscopic transnasal technique offers patients complaining exceptional skull base lesions a case-specific strategy minimizing morbidity and postoperative stay. (surgicalneurologyint.com)

The posterior teeth meanwhile are globular shaped with a distinct neck. (wikipedia.org)
A thorough evaluation is critical to differentiating the conditions and includes the acquisition of the family and medical history, examination of the face and skull from multiple angles, and neck examination for torticollis. (contemporarypediatrics.com)
Biller, HF , Shugar, JMA & Krespi, YP 1981, ' A New Technique for Wide-Field Exposure of the Base of the Skull ', JAMA Otolaryngology - Head and Neck Surgery , vol. 107, no. 11, pp. 698-702. (mssm.edu)

The pituitary gland is a small, bean-shaped organ that sits at the base of the brain, behind the bridge of the nose (Fig. 1 and 2). (mayfieldclinic.com)
The base of the skull is the area behind the eyes and nose that reaches to the back of the head. (breathe-ent.com)

The short cranium leads to the almost-circular orbits being located at the approximate midpoint of the skull and the nares are apple-shaped. (wikipedia.org)

The frontotemporal orbitozygomatic (FTOZ) transcavernous approach (TCA) is an excellent option for treating complex lesions involving multiple compartments of the skull base, including the sellar and parasellar, third ventricle, orbit, and petroclival region. (thieme-connect.de)
6 Al-Mefty O. Supraorbital-pterional approach to skull base lesions. (thieme-connect.de)
The view range of the endoscope for anterior skull base lesions was increased through ETOA with SLOR osteotomy. (thejns.org)
therefore it can be also used in patients complaining exceptional skull base lesions and in weak patients. (surgicalneurologyint.com)

Similarly, a literature review by Ratilal et al did not find evidence for the usefulness of antibiotic prophylaxis in patients with basilar skull fractures, with or without indication of CSF leakage. (medscape.com)
Skull based maxillofacial fractures are one of the most common types of injury in sports related accidents. (dentalreach.today)

Vascular Challenges in Skull Base Surgery The full range of surgical approaches to the anterior, middle, and posterior cranial fossae are covered in 22 chapters. (bookbaz.ir)
Looking at it from the inside it can be subdivided into the anterior, middle and posterior cranial fossae. (anatomysystem.com)

There are 31 segments of the spinal cord, each with a pair (right and left) of ventral (anterior) and dorsal (posterior) nerve roots that innervate motor and sensory function, respectively. (medscape.com)

Based on size, pituitary tumors may be classified as microadenomas (less than 10mm) or macroadenomas (larger than 10mm). (mayfieldclinic.com)
A number of different types of tumors can form in the skull base. (breathe-ent.com)
Most skull base tumors form in one of three areas . (breathe-ent.com)
In order to diagnose tumors of the skull base, the physician will rely on a physical exam, a neurological exam and imaging studies. (breathe-ent.com)
As with most cancers, treatment for skull base tumors is dependent upon a number of factors. (breathe-ent.com)

A retrospective review of patients undergoing endonasal skull base surgery at the University of Rosario, Argentina, and the University of Pittsburgh Medical Center was performed to identify patients who were reconstructed with a vascularized septal mucosal flap. (upmc.com)
Forty-three patients undergoing endonasal cranial base surgery were repaired with the septal mucosal flap. (upmc.com)
The anterior skull base from the endonasal view. (neurosurgicalatlas.com)

The cervical and thoracic parts of the posterior longitudinal ligament are broader and more uniform in width than the lower parts. (anatomy.app)

The utility of a lumbar drain is limited in cases of a large skull base defect or iatrogenic CSF leaks. (medscape.com)
Spontaneous CSF leaks may arise from defects in the skull base, in relation to the Tegmen tympani, Tegmen mastoideum, sigmoid sinus and posterior semicircular canal. (springeropen.com)

Only those with recurrence at inaccessible sites such as the skull base, the cavernous sinus, and the intracranial area were diagnosed by radiological features. (hindawi.com)

During exposure and laryngoscope blade insertion, minimal displacement of the skull base and rostral cervical vertebral bodies was observed. (asahq.org)
This allows the pharynx to be detached from the skull base and retracted to the contralateral side, exposing both the clivus and upper cervical vertebrae. (mssm.edu)

The posterior longitudinal ligament attaches to the posterior surfaces of the vertebral bodies and their respective intervertebral discs. (anatomy.app)
Here the basivertebral veins leave the vertebral bodies and enter the anterior internal vertebral venous plexuses. (anatomy.app)

The posterior compartment sees acoustic neuromas, chondrosarcoma, chordoma and meningioma. (breathe-ent.com)

Access levels of ETOA with SLOR osteotomy were comfortable, including anterior skull base lesion and superior orbital area. (thejns.org)

They are marked by depressions for the brain convolutions and traversed by furrows for the anterior and posterior branches of the middle meningeal vessels. (bartleby.com)
the posterior runs lateralward and backward across the temporal squama and passes on to the parietal near the middle of its lower border. (bartleby.com)

The commonest sites are mandible, zygomatic bone, floor of orbit and skull based frontal bone. (dentalreach.today)
Maxillofacial trauma due to sports affect primarily the jawbone mandible at the angle most frequently, then comes orbital floor, midface region and skull based frontal bone. (dentalreach.today)
Thus, for the first time a digital reconstruction of the skull and mandible of a large marine reptile skull is available. (peerj.com)
The posterior cranial base is shortened, and the angle of the base of the skull is flattened, leading to a retrognathic position of the mandible. (bvsalud.org)

Lingula: projection anterior to mandibular foramen 8. (slideshare.net)

Skull tomography demonstrated bilateral calcification foci in the cerebral hemispheres. (bvsalud.org)

It has a large anterior lobe (gland cells that produce hormones) and a smaller posterior lobe (nerve cells that release hormones). (mayfieldclinic.com)
The anterior and posterior nerve roots combine on each side to form the spinal nerves as they exit the vertebral canal through the intervertebral foramina or neuroforamina. (medscape.com)

20. Anterior and basal view of the skull. (edu.pl)

It sits in a small pocket of bone in the base of the skull called the sella turcica. (mayfieldclinic.com)
Bone of the base of the skull Maxilla bone 1. (slideshare.net)

8 Acioly MA, Hendricks BK, Cohen-Gadol A. Extradural clinoidectomy: an efficient technique for expanding the operative corridor toward the central skull base. (thieme-connect.de)
Anterior clinoidectomy could be achieved successfully using ETOA with SLOR osteotomy. (thejns.org)

Considering this problem, cadaver dissections were performed and a new approach to the skull base developed. (mssm.edu)

This ligament is an inferior continuation of the tectorial membrane, which connects the axis to the base of the skull . (anatomy.app)

Essentially, it is located within the vertebral canal on its anterior wall. (anatomy.app)

The dentary teeth in particular can be separated into two groups with 7 anterior teeth and 4 "cheek teeth", the two groups separated by a diastema. (wikipedia.org)
Gnatusuchus exhibits a significant evolutionary loss of alveoli, with at least 3 alveoli being lost to create the diastema and further missing alveoli posterior to the 14th dentary tooth (while ancestral caimans would have possessed 4 to 6 more alveoli in that position). (wikipedia.org)
Cranial remains of Struthiosaurus austriacus include a fragmentary braincase (PIUW 2349/6), two fragments of the orbital region (PIUW 2349/17), a distal fragment of right quadrate (PIUW 2349/uncatalogued), a fragmentary right dentary (PIUW 2349/5), the anterior end of left and right mandibles (PIUW 2349/uncatalogued) and about 18 teeth (PIUW 2349/7-9, 39, and uncatalogued). (palaeo-electronica.org)

The image below depicts the frontal aspect of the skull. (medscape.com)

Procedures described here are intended for spontaneous posterior epistaxis. (msdmanuals.com)

The pituitary gland (green) is located deep within the skull in an area called the sella. (mayfieldclinic.com)

However, the investigators found the studies to be flawed by biases, determining that no conclusion could be reached on the effectiveness of prophylactic antibiotics in cases of basilar skull fracture. (medscape.com)

The material of Struthiosaurus transylvanicus includes the posterior half of the skull with the skull roof, temporal region and, most importantly, the braincase (NHMUK R4966). (palaeo-electronica.org)

These are injuries that occur in the posterior part of the skull. (dentalreach.today)
The surgeon who manages maxillofacial trauma must be familiar with techniques for the repair of injuries that involve the anterior skull base. (medscape.com)

Anatomy22

Diseases17

Analytical, Diagnostic and Therapeutic Techniques and Equipment14

Phenomena and Processes2

Information Science1

Fossa20

Lateral7

Medial1

Artery6

Paranasal sinuses2

Bony2

Ethmoid4

Computed tomography3

Dura mater2

Anatomy3

Clinoid3

Sinuses3

Midline3

Cranial vault1

Retromandibular vein1

Spine4

Structures4

Cerebrospinal4

Bones11

Jugular1

Endoscopic5

Neck3

Nose2

Cranium1

Lesions4

Fractures2

Fossae2

Ventral1

Tumors5

Endonasal3

Thoracic1

Leaks2

Cavernous sinus1

Cervical2

Vertebral bodies2

Compartment1

Lesion1

Middle2

Mandible4

Foramen1

Cerebral1

Nerve2

Basal1

Bone2

Clinoidectomy2

Approach to the skull base1

Inferior1

Canal1

Dentary3

Aspect of the skull1

Spontaneous1

Pituitary1

Basilar1

Temporal region1

Injuries2