Surgical access for clivus chordoma. The University of California, San Francisco, experience. 1989

R L Crumley, and P H Gutin
Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco.

Surgical approaches to clivus chordoma are discussed. The approaches described in this article have been used in an attempt to minimize morbidity while maximizing exposure. The transseptal-transsphenoidal approach is appropriate for biopsy or for subtotal removal of small midline lesions of the upper (retrosellar) clivus only. The radical pterygomaxillotomy approach is used for gaining access to chordomas of the upper half of the clivus, with or without lateral extension. Removal of the lateral, posterior, and (if necessary) medial walls of the maxillary sinus is followed by resection of most of the contents of the pterygopalatine fossa. The pterygoid plates are then removed with a drill. The sphenoid sinus and upper clivus are then exposed for tumor removal. For more inferior lesions, we have modified the transoral-transpharyngeal approach by creating an inferiorly based posterior pharyngeal flap, which increases exposure of the clivus, particularly laterally. This flap can be extended laterally for paraclival extension. This approach allows removal of the lateral clivus as far laterally as the hypoglossal canal, with no dissection of tongue, mandible, lip, or cervical soft tissues.

UI MeSH Term Description Entries
D008722 Methods A series of steps taken in order to conduct research. Techniques,Methodological Studies,Methodological Study,Procedures,Studies, Methodological,Study, Methodological,Method,Procedure,Technique
D009777 Occipital Bone Part of the back and base of the CRANIUM that encloses the FORAMEN MAGNUM. Basilar Bone,Basilar Bones,Bone, Basilar,Bone, Occipital,Bones, Basilar,Bones, Occipital,Occipital Bones
D002817 Chordoma A malignant tumor arising from the embryonic remains of the notochord. It is also called chordocarcinoma, chordoepithelioma, and notochordoma. (Dorland, 27th ed) Chordomas
D003388 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. Clivus,Cranial Fossas, Posterior,Fossa, Posterior Cranial,Fossas, Posterior Cranial,Posterior Cranial Fossa,Posterior Cranial Fossas
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012888 Skull Neoplasms Neoplasms of the bony part of the skull. Neoplasms, Skull,Neoplasm, Skull,Skull Neoplasm
D013100 Sphenoid Bone An irregular unpaired bone situated at the SKULL BASE and wedged between the frontal, temporal, and occipital bones (FRONTAL BONE; TEMPORAL BONE; OCCIPITAL BONE). Sphenoid bone consists of a median body and three pairs of processes resembling a bat with spread wings. The body is hollowed out in its inferior to form two large cavities (SPHENOID SINUS). Greater Sphenoid Wing,Bone, Sphenoid,Greater Sphenoid Wings,Sphenoid Bones,Sphenoid Wing, Greater

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