A case of carcinoma of the sigmoid colon arising 26 years after ureterosigmoidostomy for a benign condition is presented. This is the 31st reported instance of neoplasia complicating ureterosigmoid diversion. Possible etiologic mechanisms include surgical trauma, constant irritation of the transplanted ureter, alteration of local tissue dynamics, and urine carcinogenesis.
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Lindsey et al. (1976) studied this question.
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