膀胱全摘標本のMappingでみられた尿管粘膜の検討

概要

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1978年5月から1986年6月までに160例の膀胱全摘除術を施行し,2例に上部尿路への再発を認めた.摘除標本の連続平行割面の検討からは膀胱側尿管に悪性所見を認めた症例が5例あり,これらの症例を検討した.尿管陽性例は,1)再発性膀胱腫瘍でやや多く,膀胱における腫瘍の性状に関しては,2)増殖様式ではnon-visible tumor typeでもっとも陽性率が高く,3)異型度についてはG1では陽性例は1例もなくG2とG3で同じ頻度となっていた.4)深達度では深部浸潤癌よりむしろ表在性腫瘍で多い傾向がみられたThe incidence of unexpected ureteral carcinoma on mapping and recurrence of upper urinary tract urothelial cancer was examined in 160 patients who had undergone total cystectomy for vesical cancer and complete mapping of the specimens between May, 1978 and June, 1986 at our Center. Unexpected carcinoma in the ureteral stump was found in 5 patients (3.1%) and recurrent cancer in the upper urinary tract developed in 2 (1.3%) of the 160 patients. The incidence was higher in the recurrent bladder cancer cases, and also higher in patients with non-visible, high grade and superficial tumors of the bladders.