Schwannoma of the intermediate nerve.
The intermediate nerve is seldom identified as the site of tumor origin in cerebellopontine angle schwannomas. A 29-year-old man presented with a 6-month history of slowly progressive hearing loss and dizziness; facial nerve weakness was not observed clinically. Magnetic resonance imaging revealed a tumor in the left cerebellopontine angle region extending up to the geniculate ganglion and along the course of the superficial petrosal nerve. A CT scan showed enlargement of the facial nerve canal. Microsurgery was performed via an extended retrosigmoid approach. Intraoperative and electrophysiological findings identified the intermediate nerve as the site of tumor origin.
Scheller
Christian
C
Department of Neurosurgery, Martin-Luther University of Halle-Wittenberg, Halle, Germany. christian.scheller@medizin.uni-halle.de
Rachinger
Jens
J
Prell
Julian
J
Kornhuber
Malte
M
Strauss
Christian
C
D000328:Adult; D002528:Cerebellar Neoplasms / Q000175:diagnosis* / Q000601:surgery*; D002530:Cerebellopontine Angle; D006801:Humans; D008297:Male; D009442:Neurilemmoma / Q000175:diagnosis* / Q000601:surgery*