A case is presented in which a very large circumferential villous tumor was totally removed transanally with complete anatomic and physiologic restoration. Large circumferential tumors of the rectum present formidable technical problems. They may be malignant. When they are benign, abdominoperineal resection can be avoided. A less radical procedure that may be employed with complete resection of the tumor and without stricture formation, is described briefly.
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Groff et al. (1981) studied this question.
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