原発性腎盂移行上皮内癌の1例

Primary Carcinoma in Situ of the Renal Pelvis:A Case Report

　67歳，男性。主訴は無症候性肉眼的血尿で，尿細胞診はclass Vであった。膀胱多部位生検を施行したが悪性所見を認めず，右尿管口より少量の出血を認め，両側分腎尿採取，両側逆行性腎盂造影，右尿管鏡検査を施行した。右尿管鏡検査で腎盂粘膜の発赤を認めた。右分腎尿細胞診でclass Vを認め，右腎盂の原発性移行上皮内癌と診断し，右腎摘除術，右尿管引き抜き術を施行した。現在，術後約2年になるが再発を認めていない。

The patient was a 67-year-old male with a chief complaint of macroscopic hematuria.Urinary cytology showed class V. Cystoscopic examination revealed bloody urine from the right ureteral orifice without abnormality in the bladder mucosa. The retrograde pyelogram showed no tumormasses and a rigid ureteropyeloscopic examination revealed flat erythema mucosa in the right renal pelvis. Cytological examination of the urine obtained from the right renal pelvis was positive for malignant cells. Under the preoperative diagnosis of primary right renal pelvic tumor, right total nephroureterectomy was performed.