A Case of Giant Hemangiopericytoma in the Retroperitoneal Cavity

Masahide Yamamoto, Hidetoshi Omori, Masanori Terashima, Masahiko Murakami, Senji Kanno, Kazuyoshi Saito¹⁾, Tamotsu Sugai²⁾, Takayuki Suto²⁾, Kosuke Sasaki³⁾

First Department of Surgery¹⁾, Division of Pathology Central Clinical Laboratory²⁾ and First Department of Pathology³⁾, Iwate Medical University School of Medicine

Hemangiopericytoma is a relatively rare type of tumor, which was first reported by Stout and Murray in 1942, and is thought be originated from the perithelium. This paper reports our recent experience with hemangiopericytoma in the retroperitoneum of a 55-year-old woman. Close examination led to a diagnosis of retroperitoneal sarcoma, and the patient underwent extirpation of the tumor in combination with left nephrectomy on July 5, 1991. Histopathological examination resulted in the final diagnosis of hemangiopericytoma. The postoperative course was favorable, and the patient was discharged on July 30. Thirty-four Japanese cases of hemangiopericytoma occurring in the retroperitoneum including our present case are discussed.

Key words
hemangiopericytoma, retroperitoneal tumor

Reprint requests
Masahide Yamamoto First Department of Surgery, Iwate Medical University School of Medicine
19-1 Uchimaru, Morioka, 020 JAPAN

Accepted
January 13, 1993

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