title: Choroid plexus papilloma containing bone.
abstract: The presence of bone in choroid plexus papillomas is a rare event. The authors report a case of choroid plexus papilloma of the IVth ventricle containing bone in a 18-year-old man, and review two previously reported cases, as well as the mechanisms proposed for the presence of bone and cartilage in neuroepithelial neoplasms.
mesh_terms: D000293:Adolescent; D002551:Cerebral Ventricle Neoplasms / Q000473:pathology*; D002831:Choroid Plexus; D006801:Humans; D008297:Male; D009999:Ossification, Heterotopic; D010212:Papilloma / Q000473:pathology*