前立腺平滑筋肉腫の2例

Abstract

症例1, 45歳男, 排尿終末時痛, 頻尿を主訴とする.超音波診断とCT scanで前立腺腫瘍を認め, 組織学検査では前立腺平滑筋肉腫であった.前立腺全摘除術及び膀胱部分切除術を施行した.術後補助療法を施行せず, 術後1年再発, 転移の徴候はなく, 経過観察中である.症例2, 63歳男, 肺癌と大腸ポリープで内科に入院した.CT scanで大きな前立腺腫瘍と肺, 肝, 両側腎に多発性腫瘍を認めた.前立腺腫瘍精査のため当科を受診した.経直腸的前立腺針生検を実施し, 病理学的検査により前立腺平滑筋肉腫と診断した.治療は行わず3ヵ月後に死亡した

We herein present two cases prostatic leiomyosarcoma. The first case was in a 45-year-old man who presented at our department with the chief complaints of pain on voiding and pollakisuria on November 13, 1996. Ultrasonography and computed tomographic (CT) scan revealed a prostatic tumor. A histological examination of biopsy specimens revealed leiomyosarcoma of the prostate. Total prostatectomy and partial cystectomy were performed. No adjuvant therapy was performed. He is still alive without disease 12 months after operation. The second case was in a 63-year-old man who was admitted to our hospital for treatment of a lung tumor and colon polyp on February 28, 1997. CT scans showed a large prostatic tumor and multiple tumors in the lung, liver and bilateral kidneys. He was referred to our department for evaluation of the prostatic tumor. A transrectal needle biopsy of the prostate for histological diagnosis revealed leiomyosarcoma. No treatment was performed and he died 3 months later. In addition, 57 cases of prostatic leiomyosarcoma collected from the Japanese literature are also reviewed.