Isolated Third Nerve Palsy as the Initial Manifestation of a Large Clival Chordoma

Abstract

FIG. 1. Ocular motility examination of left oculomotor nerve palsy. The left eye displays exotropia in primary gaze and adduction, upgaze and downgaze deficits, and full abduction.

Diagnosis and management of a rare case of clival chordoma in a young male patient

“…In 30%-35% of cases, they involve the skull base, most frequently at the spheno-occipital level. These tumors normally grow slowly and cause symptoms related to the mass influence on nearby structures (brainstem, cranial nerves, nasopharynx, spinal cord) [ 2 , 3 ]. Since chordomas arise in bone, they are usually extradural and cause local bone destruction.…”