title: Sylvius aqueduct septum.
abstract: We present a case of chronic hydrocephalus discovered in adulthood through an episode of acute decompensation. Multimodal imaging revealed the cause of this hydrocephalus to be a membranous septum of the aqueduct of Sylvius, a condition for which few reports exist.
authors.affiliation: Department of Radiology, University of Liège, Liège, Belgium. tim.coolen@ulb.ac.be
authors.forename: T
authors.initials: T
authors.lastname: Coolen
authors.affiliation: Department of Radiology, Centre Hospitalier Regional de la Citadelle, Liège, Belgium.
authors.forename: L
authors.initials: L
authors.lastname: Médart
authors.affiliation: Department of Radiology, Centre Hospitalier Regional de la Citadelle, Liège, Belgium.
authors.forename: M
authors.initials: M
authors.lastname: Tebache
authors.affiliation: Department of Radiology, Centre Hospitalier Regional de la Citadelle, Liège, Belgium.
authors.forename: L
authors.initials: L
authors.lastname: Collignon
mesh_terms: D000328:Adult; D002535:Cerebral Aqueduct / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D002908:Chronic Disease; D003251:Constriction, Pathologic / Q000150:complications; D003287:Contrast Media; D003937:Diagnosis, Differential; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis* / Q000209:etiology; D007472:Iohexol; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D064847:Multimodal Imaging / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media; D007472:Iohexol