前立腺Hemangiopericytomaの1例

Abstract

One case of prostatic hemangiopericytoma is reported. The patient was a 38-year-old man who visited us complaining of difficulty in urination for 6 months duration. Before he came to us, he had undergone open prostatectomy under the suspicion of prostatic abscess++ at a previous hospital with failure because of very severe adhesion. He was referred to us under the histologic suspicion of prostatic sarcoma. From the histopathological study, he was finally diagnosed as having hemangiopericytoma. However, it was difficult to diagnose whether the lesion was benign or malignant in nature. After the external X-ray irradiation, he has been placed under our observation for these 20 years with roentgenographic followup. No infiltration or metastasis has been detected. Judging from these findings and our review of the literature, we concluded that the prostatic hemangiopericytoma reported here is benign in nature. To our knowledge, only 6 cases (5 cases from Europe and the US, and 1 case from Japan) have been reported heretofore.