前立腺粘液癌の1例

Abstract

64歳男.PSA高値を主訴とした.入院時, PSAは11ng/mlと高値を示し, 前立腺右葉に一部石様硬の結節を触知した.系統的前立腺針生検を行い, 右葉に触知する結節部を追加生検し, 同部より, 中分化型腺癌, Gleason score 7の診断を得た.骨盤部MRIにて前立腺右葉にT2強調像にてhigh intensityを呈し, dynamic MRIにて早期より濃染するmassを認めた.以上より, 前立腺癌, T2N0M0, stage B1と診断された.恥骨後式根治的前立腺全摘除術を施行し, 病理組織学的所見より原発性前立腺粘液癌と診断した.前立腺粘液癌は稀であり, 調べ得た限りでは, 本邦報告例は自験例を含め46例であった

We present a case of mucinous carcinoma of prostate. A 64-year-old man visited our hospital because of high score of prostate specific antigen (PSA). Prostatic biopsies were performed twice, but cancer was not found. Since the PSA value elevated gradually and a hard nodule in the right lobe of prostate became palpable, we repeated the biopsy that revealed cancer. Retropubic radical prostatectomy was performed and pathological examination revealed mucinous carcinoma of prostate. Mucinous carcinoma of prostate is rare, and to our knowledge, only 46 cases have been reported in the Japanese literature.