title: Neuroendoscopic appearance of an intraventricular cavernous angioma blocking the foramen of monro - case report.
abstract: A 47-year-old woman presented with unilateral ventricular enlargement detected by magnetic resonance imaging during a medical checkup. Neuroendoscopic exploration identified a multilocular lesion in which dark red fluid formed a niveau near the right side of the foramen of Monro. The diagnosis was intraventricular cavernous angioma. Restricted flow of cerebrospinal fluid at the foramen of Monro was observed. Xanthochromia, which seemed to be due to previous bleeding, was observed at the fornix. When the neuroendoscope touched the angioma, the wall collapsed and bled. Endoscopic removal of the angioma was abandoned, and craniotomy and resection of the angioma were performed. No new neurological anomalies were observed after surgery. Preoperative diagnosis of intraventricular cavernous angioma is difficult based on neuroimaging. Neuroendoscopy is effective for diagnosis and the decision-making process regarding treatment.
authors.affiliation: Department of Neurosurgery, Kitasato University School of Medicine, Sagamihara, Kanagawa, Japan.
authors.forename: Kimitoshi
authors.initials: K
authors.lastname: Sato
authors.forename: Hidehiro
authors.initials: H
authors.lastname: Oka
authors.forename: Satoshi
authors.initials: S
authors.lastname: Utsuki
authors.forename: Satoru
authors.initials: S
authors.lastname: Shimizu
authors.forename: Sachio
authors.initials: S
authors.lastname: Suzuki
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Fujii
mesh_terms: D002536:Cerebral Arteries / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000473:pathology; D002550:Cerebral Veins / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000473:pathology; D002552:Cerebral Ventricles / Q000473:pathology* / Q000503:physiopathology; D042241:Early Diagnosis; D004724:Endoscopy / Q000379:methods*; D005260:Female; D020786:Hemangioma, Cavernous, Central Nervous System / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis* / Q000209:etiology* / Q000503:physiopathology; D007431:Intraoperative Complications / Q000517:prevention & control; D020547:Lateral Ventricles / Q000473:pathology* / Q000503:physiopathology; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000295:instrumentation / Q000379:methods; D019106:Postoperative Hemorrhage / Q000517:prevention & control; D011300:Preoperative Care; D011859:Radiography; D016896:Treatment Outcome; D014696:Ventriculostomy / Q000295:instrumentation / Q000379:methods