title: Bone formation within a choroid plexus papilloma.
abstract: Bone formation within the choroid plexus papillomas is rare, with only 4 previous cases reported. We present a case of a 12-year-old boy who presented with papilledema, visual loss and hydrocephalus who was found to have a choroid plexus papilloma. Histological analysis of the tumor revealed foci of cancellous bone formation with hematopoietic cells within the marrow spaces. We review the proposed mechanisms for bone formation within neuroepithelial brain tumors.
authors.affiliation: Section of Neurosurgery, University of Michigan Medical Center, Ann Arbor 48109-0338, USA.
authors.forename: S E
authors.initials: SE
authors.lastname: Doran
authors.forename: M
authors.initials: M
authors.lastname: Blaivas
authors.forename: R C
authors.initials: RC
authors.lastname: Dauser
mesh_terms: D002648:Child; D002831:Choroid Plexus / Q000473:pathology / Q000601:surgery; D016545:Choroid Plexus Neoplasms / Q000473:pathology* / Q000601:surgery; D005910:Glioma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009999:Ossification, Heterotopic / Q000473:pathology*