MULTIPLE CRANIAL NERVE dysfunction presenting as false localizing sign
s is rare. We report a 20-year-old woman who had concurrent trigeminal
sensory disturbance, abducens, and peripheral facial nerve palsies in
association with a contralateral acoustic neuroma. After surgery, the
trigeminal nerve disturbance and the abducens nerve palsy completely
recovered, but the peripheral facial nerve palsy persisted. The nature
of tumor, the presence of brain stem distortion, the anatomic variati
on of posterior fossa, and the relationships of cranial nerves and nea
rby blood vessels, which are factors influencing the occurrence of fal
se localizing, are briefly discussed.