Neurofibromatosis type II presenting as vertical diplopia

Abstract

Neurofibromatosis type II (NF II) is rare and most commonly presents with hearing loss, tinnitus and/or vestibular disturbance in the third decade of life. The authors describe a rare case presenting with NF II with vertical diplopia due to IVth nerve palsy. The patient was otherwise asymptomatic despite multiple extensive lesions on MRI.