title: Giant retroperitoneal pelvic hemangiopericytoma.
abstract: Hemangiopericytoma is a rare soft tissue sarcoma, comprising less than one percent of all vascular neoplasms. This report describes a 75-year-old man with a very large malignant retroperitoneal hemangiopericytoma that was successfully excised. The tumor measured 23 cm in its greatest dimension and, as such, is the largest malignant hemangiopericytoma reported to date. The clinical and pathologic features of this lesion and a review of the literature are presented.
authors.affiliation: Department of Surgery, Englewood Hospital, New Jersey.
authors.forename: P
authors.initials: P
authors.lastname: Morris
authors.forename: R
authors.initials: R
authors.lastname: Stahl
authors.forename: E
authors.initials: E
authors.lastname: Liriano
authors.forename: H
authors.initials: H
authors.lastname: Dardik
mesh_terms: D000368:Aged; D001808:Blood Vessels / Q000473:pathology; D006393:Hemangiopericytoma / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000473:pathology / Q000601:surgery*; D012983:Soft Tissue Neoplasms / Q000473:pathology / Q000601:surgery*