Clivus and foramen magnum
WebThe clivus (/ ˈ k l aɪ v ə s /, Latin for "slope"), or Blumenbach clivus, is a bony part of the cranium at the base of the skull.It is a shallow depression behind the dorsum sellae of the sphenoid bone.It slopes gradually to the … WebA retrospective analysis of histopathologically confirmed cases of ventral FM NEC, operated from 2010–2013 at our institute, was performed. For review, only those cases of NEC extending from the lower clivus to the C2 level constituting the foramen magnum were included. Including our four cases, a total of 47 cases were identified.
Clivus and foramen magnum
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WebForamen magnum (FM) lesions are relatively rare, accounting for 1.1-3.8% of all spinal cord and brain tumors.[1,2] ... This was relatively higher when one considered that metastatic involvement of the clivus and foramen magnum was stated to be extremely rare. In addition, we encountered some unusual cases like a solitary fibrous tumor and ... WebThe lower clivus is the part from the glossopharyngeal nerve to the foramen magnum. This part is bounded anteriorly by the lower nasopharynx and retropharyngeal tissues, posteriorly by the vertebral artery and medulla, and laterally by the sigmoid sinus, jugular bulb, and cranial nerves IX to XII.
WebThe clivus is located at the midline, in the deepest part of the skull base. It constitutes the inclined anteroinferior surface of the posterior cranial fossa and extends from the dorsum … WebJul 8, 2024 · (a) Axial nonenhanced CT image of the head shows crowding (arrowheads) at the foramen magnum. (b) Sagittal T2-weighted MR image of the brain obtained at follow-up shows a peglike configuration of the cerebellar tonsils with downward displacement (line) through the foramen magnum, resulting in crowding of the medulla. Note the decreased …
Weban angle greater than 140° between the clivus and the plane of the anterior cranial fossa (basal angle) and is an anthropological measure without pathological implications itself [2]. Platybasia can occur in association with BI. In this case shortening and horizontalization of the basioc-ciput displace the foramen magnum cranially WebThe internal occipital crest bifurcates above the foramen magnum to form a V-shaped ridge between the limbs of which is the vermian fossa. The basilar part of the occipital bone, …
Webo describe the microsurgical anatomy of the high anterior cervical approach to the clivus and foramen magnum, and describe novel skull base extensions of the approach. …
WebPurpose: To determine if there is a correlation between cerebellar tonsillar descent in patients with and without Chiari I malformation and three skull morphometric measurements: clivus length, anteroposterior diameter of the foramen magnum, and Boogard's angle. Methods: Cerebellar tonsillar descent, clivus length, anteroposterior diameter of the … brother printer drivers mfc-t810wWebKey Points. Craniocervical junction abnormalities are congenital or acquired abnormalities of the occipital bone, foramen magnum, or first two cervical vertebrae that decrease the space for the lower brain stem and cervical … brother printer drivers mfc t810wWebResults and discussion: Chordomas of the clivus and foramen magnum were seen in eight, fibrous dysplasia in four, aneurysmal bone cysts in four, eosinophilic granuloma affecting the atlas and axis vertebra in four, Ewing's sarcoma involving the atlas in two, osteoblastoma in two, neurenteric cysts in four, meningioma in five, schwannoma in two ... brother printer drivers mfc l8610cdwWebThe internal occipital crest bifurcates above the foramen magnum to form a V-shaped ridge between the limbs of which is the vermian fossa. The basilar part of the occipital bone, which is also referred to as the clivus, is a thick quadrangular plate of bone that extends forward and upward to join the sphenoid bone just below the dorsum sellae. brother printer drivers mfc l8900cdwWebThe foramen magnum is an oval-shaped opening in the occipital bone bound by the basiocciput anteriorly, the occipital condyles laterally, and the supraocciput posteriorly. If premature suture fusion occurs and/or endochondral ossification is abnormal, a small foramen magnum is the result. Anomalies of the foramen magnum include either small … brother printer drivers mfc t800wWebObjective: To describe the microsurgical anatomy of the high anterior cervical approach to the clivus and foramen magnum, and describe novel skull base extensions of the approach. Methods: Eight adult cadaveric specimens were included in this study. The high anterior cervical approach includes a minimal anterior clivectomy and its lateral skull ... brother printer drivers model hl-l2390dwWebBackground: Anterior or anterolateral lesions of the lower third clivus and/or foramen magnum require a surgical exposure that provides a clear visualization of both pathological and normal anatomy without retraction of neural or vascular structures. The posterolateral approach permits access to the anterolateral intradural aspect of the brainstem. brother printer drivers new zealand