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Traumatic, degenerative, benign, and malignant lesions of the clivus and cervical spine were treated by three basic surgical procedures. Midline skull base lesions in the nasopharynx, clivus, and C-1 were approached via the transmandibular and transcervical route. Lesions of C-2 and C-3 were operated on through a high transcervical route (above the hypoglossal nerve). A low transcervical route was used for lesions at the level of C-4 to C-7.
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Krespi et al. (1988) studied this question.
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