title: Epithelial cyst of the fourth ventricle. Case report.
abstract: A case of epithelial cyst in the fourth ventricle of a 4-year-old child is described. A single epithelial layer with a clear basement membrane lining the cyst wall was observed. There were no prominent histological findings to suggest a pathogenesis for this cyst based on immunohistochemical or ultrastructural studies; however, the cyst fluid contained significant amounts of carcinoembryonic antigen. It is considered that the epithelial layer lining the cyst wall was possibly of endodermal origin.
authors.affiliation: Department of Neurological Surgery, Nihon University School of Medicine, Tokyo, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Yoshida
authors.forename: S
authors.initials: S
authors.lastname: Nakamura
authors.forename: T
authors.initials: T
authors.lastname: Tsubokawa
authors.forename: J
authors.initials: J
authors.lastname: Sasaki
authors.forename: T
authors.initials: T
authors.lastname: Shibuya
mesh_terms: D001927:Brain Diseases / Q000175:diagnosis / Q000473:pathology; D002272:Carcinoembryonic Antigen / Q000032:analysis; D002552:Cerebral Ventricles; D002675:Child, Preschool; D003560:Cysts / Q000737:chemistry / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D008297:Male
chemical_list: D002272:Carcinoembryonic Antigen