title: Endoscopic observation of pathophysiology of ventricular diverticulum.
abstract: BACKGROUND
  Although there have been reports dealing with ventricular diverticulum (VD) analyzed by cisternography and computed tomography (CT), those focusing on magnetic resonance imaging (MRI) or neuroendoscopic findings are rare.
  
  
  METHODS
  We present a case of noncommunicating hydrocephalus caused by aqueductal stenosis with cystic lesion located in supracerebellar region. Third ventriculostomy was performed on this case. The conventional CT and MRI were compatible with usual VD, but neuroendoscopic examination suggested otherwise. The endoscopic view inside of the cystic lesion demonstrated passing veins and no membrane. We diagnosed this cystic lesion as a unique subtype of advanced VD mimicking spontaneous ventriculostomy. Endoscopic observation of the cyst was very useful for accurate diagnosis and safe treatment.
authors: Department of Neurosurgery, University Hospital of Tsukuba, Tsukuba, Japan.
authors: Satoru
authors: S
authors: Osuka
authors: Shingo
authors: S
authors: Takano
authors: Takao
authors: T
authors: Enomoto
authors: Eiichi
authors: E
authors: Ishikawa
authors: Koji
authors: K
authors: Tsuboi
authors: Akira
authors: A
authors: Matsumura
mesh_terms: D000293:Adolescent; D002531:Cerebellum / Q000473:pathology; D002552:Cerebral Ventricles / Q000473:pathology* / Q000601:surgery; D002831:Choroid Plexus / Q000473:pathology; D002946:Cisterna Magna / Q000473:pathology; D003560:Cysts / Q000473:pathology; D004240:Diverticulum / Q000150:complications / Q000473:pathology* / Q000601:surgery; D005260:Female; D005336:Fiber Optic Technology; D006801:Humans; D006849:Hydrocephalus / Q000473:pathology; D008279:Magnetic Resonance Imaging; D044583:Neuroendoscopy; D009901:Optic Nerve Diseases / Q000473:pathology; D020542:Third Ventricle / Q000473:pathology / Q000601:surgery; D014057:Tomography, X-Ray Computed; D014696:Ventriculostomy; D014786:Vision Disorders / Q000209:etiology