膀胱原発小細胞癌の1例

Abstract

64歳男.肉眼的血尿を主訴とした.経尿道的生検の病理診断は小細胞癌であった.膀胱に対して放射線照射を実施し, 腫瘍が84%縮小したため, 膀胱部分切除術を施行した.骨盤リンパ節郭清は行わなかった.切除標本のHE染色, 免疫組織学的検査から小細胞癌と確定診断した.術後補助療法は行わなかったが, 2年後も再発の徴候を認めていない

A 64-year-old man presented with asymptomatic gross hematuria. Cystoscopy revealed a non-papillary broad-based tumor on the posterior wall of the bladder. He had no evidence of metastases. Urine cytology showed a cluster of molded tumor cells with naked hyperchromatic nuclei, which indicated small cell carcinoma. He received preoperative irradiation to the bladder and underwent partial cystectomy. Pathological examination of the specimen showed small cell carcinoma at the stage of pT2. Two years after the operation, he had no evidence of recurrence.