6533b7d6fe1ef96bd1266794

RESEARCH PRODUCT

Rapid malignant progression of an intraparenchymal choroid plexus papillomas

Luca RuggeriRosario MaugeriCesare GambadoroNicola AlberioRoberto BattagliaRaffaele AlessandrelloFrancesco NobileDomenico Gerardo IacopinoGiovanni CinquemaniRita LipaniGiovanni Urrico

subject

Pathologymedicine.medical_specialtyChoroid plexus atypical papillomaWorld health03 medical and health sciences0302 clinical medicineCarcinomaMedicinechoroid plexus papillomasSettore MED/27 - Neurochirurgiabusiness.industrychoroid plexus carcinomaGeneral Neurosurgery: Case Reportmalignant progressionChoroid plexus carcinomamedicine.diseaseChoroid plexus papilloma030220 oncology & carcinogenesischoroid plexus papillomaPapillomaSurgeryChoroid plexusNeurology (clinical)Histological gradesMalignant progressionbusinessWorld Health Organization classification030217 neurology & neurosurgery

description

Background: Choroid plexus tumors (CPTs) are rare neoplasms accounting for only 0.3-0.6% of all brain tumors in adults and 2-5% in children. The World Health Organization (WHO) classification describes three histological grades: grade I is choroid plexus papilloma (CPP), grade II is atypical papilloma, and grade III is the malignant form of carcinoma. In adults, CPTs rarely have a supratentorial localization. Case Description: Here we report a very rare case of an intraparenchymal parietal CPP with a rapid histological transition from grade I to grade III WHO in a 67-year-old man, in <7 months. Conclusion: Because of the rarity of these oncotypes, descriptions of each new case are useful, mostly to consider this diagnostic entity in extraventricular brain tumors of adults, despite an unusual location.

https://doi.org/10.4103/sni.sni_434_17