title: Mixed colloid cyst-xanthogranuloma of the third ventricle. A light and electron microscopic study.
abstract: A mixed colloid cyst-xanthogranuloma of the third ventricle is described. The xanthogranuloma associated with the cyst completely occupied the third ventricle. On light microscopy, a single epithelial layer with a basal lamina was seen lining the cyst wall. Electron microscopic study revealed three different kinds of cells in the epithelial layer: ciliated, nonciliated, and basal cells. Many lipid droplets were present in the superficial epithelial cells, macrophages, pericytes, and endothelia. The pathogeneses of the cyst and of the xanthogranuloma are discussed.
mesh_terms: D001927:Brain Diseases / Q000473:pathology / Q000601:surgery; D002552:Cerebral Ventricles / Q000473:pathology / Q000601:surgery / Q000648:ultrastructure; D003102:Colloids / Q000502:physiology*; D003560:Cysts / Q000473:pathology* / Q000601:surgery / Q000648:ultrastructure; D006099:Granuloma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008297:Male; D008854:Microscopy, Electron; D008875:Middle Aged; D014973:Xanthomatosis / Q000473:pathology* / Q000601:surgery
chemical_list: D003102:Colloids