title: Retroperitoneal hemangiopericytoma: case report and literature review.
abstract: Retroperitoneal hemangiopericytoma is a kind of uncommon tumor. We report a case of 41-year-old man who was diagnosed retroperitoneal tumor without significant symptoms by abdominal ultrasonography. Abdominal CT and MRI scans show a 6 cm × 5 cm solid tumor delineated clearly from adjacent organs. Excision of the tumor was performed and the histopathological examination confirmed the diagnosis of hemangiopericytoma.
authors.affiliation: Department of Radiology, Huashan Hosptial, Fudan University, Shanghai 200040, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Yin
authors.forename: Li
authors.initials: L
authors.lastname: Liu
authors.forename: Ya-di
authors.initials: YD
authors.lastname: Li
authors.forename: Dao-Ying
authors.initials: DY
authors.lastname: Geng
authors.forename: Zun-Guo
authors.initials: ZG
authors.lastname: DU
mesh_terms: D000328:Adult; D006393:Hemangiopericytoma / Q000175:diagnosis*; D006801:Humans; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000175:diagnosis*