ABSTRACT
This chapter focuses on the surgical treatment of clival tumors. Since clival chordoma is the archetypal tumor in this location, specific comments regarding this tumor type will be made. Irrespective of the pathology, the bone of the clivus may be infiltrated by tumor and require resection beyond the grossly visible tumor margin. The majority of tumors in this location are large at diagnosis and extend to the anterior cranial fossa or parasellar region or ventrally into the nasal cavity, paranasal sinuses or nasopharynx or to the middle fossa.
