title: Progression of choroid plexus papilloma.
abstract: Choroid plexus papillomas are rare neoplasms that arise from choroid plexus epithelium. The World Health Organization classification describes three histological grades. Grade I is choroid plexus papilloma, grade II is atypical choroid plexus papilloma and grade III is choroid plexus carcinoma. Progression between grades is rare but documented. We present two adult cases, a 53-year-old female and a 70-year-old male, who demonstrated clear interval histological progression from grade I choroid plexus papilloma to higher grades.
authors.affiliation: Department of Neurosurgery, St Vincent's Hospital Melbourne, 41 Victoria Parade, Fitzroy, Melbourne, VIC 3065, Australia. Electronic address: ranadhillon@email.com.
authors.forename: Rana S
authors.initials: RS
authors.lastname: Dhillon
authors.forename: Yi Yuen
authors.initials: YY
authors.lastname: Wang
authors.forename: Penny A
authors.initials: PA
authors.lastname: McKelvie
authors.forename: Brendan
authors.initials: B
authors.lastname: O'Brien
mesh_terms: D000368:Aged; D002277:Carcinoma / Q000473:pathology*; D016545:Choroid Plexus Neoplasms / Q000473:pathology*; D018450:Disease Progression; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010212:Papilloma / Q000473:pathology*
keywords: Adult; Atypical choroid plexus papilloma; Choroid plexus carcinoma; Choroid plexus papilloma; Histological progression