[Adult-onset aqueductal stenosis caused by membranous occlusion in the aqueduct: a case report].
The authors report a case of adult-onset aqueductal stenosis caused by membranous occlusion of the aqueduct. The patient was a 35-year-old man, who suffered from progressive headache. On admission, computed tomography (CT) scan showed marked dilatations of the lateral and third ventricles. Midsagittal T1-weighted magnetic resonance imaging (MRI) scan showed a membranous occlusion at the lower end of the aqueduct, with dilatation of the proximal aqueduct and elevation of the tectum. Midsagittal cine-MRI demonstrated the cerebrospinal fluid flow in the aqueduct. The patient was diagnosed as having hydrocephalus resulting from membranous stenosis of the aqueduct by MRI. A ventriculo-peritoneal shunt operation was performed and his symptoms improved markedly. The membranous occlusion of the aqueduct is a rare cause of hydrocephalus. The etiology and therapy of aqueductal stenosis are discussed.
Yamasaki
F
F
Department of Neurosurgery, Kure National Hospital.
Kodama
Y
Y
Hotta
T
T
Taniguchi
E
E
Kajiwara
Y
Y
Sakoda
E
E
Eguchi
K
K
Hashizume
A
A
D000328:Adult; D017668:Age of Onset; D002535:Cerebral Aqueduct / Q000002:abnormalities* / Q000473:pathology / Q000601:surgery; D002552:Cerebral Ventricles / Q000473:pathology; D004108:Dilatation, Pathologic; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis / Q000209:etiology / Q000601:surgery; D008279:Magnetic Resonance Imaging; D008297:Male; D014057:Tomography, X-Ray Computed; D017287:Ventriculoperitoneal Shunt