title: A suprasellar subarachnoid pouch; aetiological considerations.
abstract: A child with hydrocephalus treated by a valved shunt was reinvestigated after developing a shunt infection. A pouch was discovered invaginating the floor of the third ventricle and filling slowly with CSF from the region of the interpeduncular cistern. Histology and mechanisms of this pouch formation are discussed.
mesh_terms: D001099:Arachnoid / Q000002:abnormalities* / Q000601:surgery; D002552:Cerebral Ventricles / Q000002:abnormalities* / Q000473:pathology / Q000601:surgery; D002557:Cerebrospinal Fluid Shunts; D003560:Cysts / Q000151:congenital* / Q000473:pathology / Q000601:surgery; D004805:Ependyma / Q000473:pathology; D006801:Humans; D006849:Hydrocephalus / Q000209:etiology* / Q000601:surgery; D007223:Infant; D007427:Intracranial Pressure; D008297:Male; D011183:Postoperative Complications / Q000601:surgery; D013346:Subarachnoid Space; D014057:Tomography, X-Ray Computed