Endoscopic Endonasal Approach to Mesencephalic Cavernous Malformations.

Background: Symptomatic cavernous malformations involving the brainstem are difficult to access by conventional approaches, which often require dramatic brain retraction to gain adequate operative corridor. Here, we present a successful endoscopic endonasal transclival approach for resection of a hemorrhagic, symptomatic mesencephalic cavernous malformation.

Case Description: A 20-year-old woman presented with acute onset of headache, nausea, and vomiting.