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April 1966

Malignant Polyp of the Colon and Rectum

Author Affiliations

From the departments of surgery and pathology, University of Alberta, Edmonton.

Arch Surg. 1966;92(4):514-519. doi:10.1001/archsurg.1966.01320220070011

UNDER REVIEW by several investigators has been the question of the surgical treatment of patients in whom a polyp has been removed from the rectosigmoid area and diagnosed as an "adenocarcinomatous polyp" but in whom there is no sigmoidoscopic evidence of residual tumor.

Such a patient, a 34-year-old man referred to us for the purpose of a combined abdominal-perineal resection after the removal of his polyp, stimulated us to review our experience in these cases before deciding if such radical treatment was indicated. We obtained the original microscopic section and our pathologist considered the polyp to be a carcinoid tumor of the rectum (Fig 1), demonstrating the characteristics described by Ackerman and Butcher.1 An abdominal perineal resection was not carried out.

The microscopic slides and case records of 111 patients with a diagnosis of malignancy in a polyp were reviewed. All patients had a follow-up period of from 5

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