False-negative brainstem auditory evoked potential recordings in a case of multiple acoustic neuroma.
A case history is reported to demonstrate that electrophysiological testing (brainstem auditory evoked potentials, BAEP and stapedius reflex) may fail in the search for cerebello-pontine angle tumours. The clinical history began with repeated episodes indicating a disorder of the vestibular system. Repeated testing of BAEP exhibited normal curves before and after surgery on the right side. This case serves as a reminder that normal BAEP do not necessarily exclude the presence of an acoustic neuroma developing in the immediate vicinity of the vestibular nerve.
Buettner
U W
UW
Department of Neurology, University Hospital Tübingen, Federal Republic of Germany.
Thron
A
A
Elies
S
S
Grote
E
E
D001933:Brain Stem / Q000503:physiopathology*; D005072:Evoked Potentials, Auditory; D005188:False Negative Reactions; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009378:Neoplasms, Multiple Primary / Q000175:diagnosis / Q000503:physiopathology*; D009464:Neuroma, Acoustic / Q000175:diagnosis / Q000503:physiopathology*