Delayed traumatic midbrain syrinx. Clinical, pathologic, and electrophysiologic features.
Seven months following severe crushing closed-head trauma with initial excellent recovery, neurologic deficits referable to the right mesencephalon abruptly developed in a 28-year-old man. Computed tomography demonstrated a cystic midbrain lesion with apparent communication with the aqueduct (later confirmed at autopsy). Brain-stem auditory evoked potentials after the clinical deterioration showed depression of amplitude of wave V, compared with predeficit records, only when the ear contralateral to the brain-stem lesion was stimulated.
Anderson
D C
DC
Department of Neurology, Hennepin County Medical Center, Minneapolis, MN 55415.
Bundlie
S
S
Larson
D A
DA
Rockswold
G
G
Mastri
A
A
D000328:Adult; D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology*; D001930:Brain Injuries / Q000000981:diagnostic imaging / Q000473:pathology* / Q000503:physiopathology; D001933:Brain Stem / Q000473:pathology / Q000503:physiopathology; D005072:Evoked Potentials, Auditory; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed