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December 27, 1930

THE ORIGIN OF POLYPI OF THE LARGE BOWELWITH ESPECIAL REFERENCE TO ADENOMA: PRELIMINARY REPORT

Author Affiliations

Assistant Professor of Surgery, University of Minnesota Medical School; Associate Surgeon, Minneapolis General Hospital MINNEAPOLIS

JAMA. 1930;95(26):1969-1970. doi:10.1001/jama.1930.02720260015005
Abstract

Polypi may occur in almost any portion of the intestinal tract, but approximately 75 per cent of these occur in the large bowel. Broadly speaking, any pedunculated tumor extending into the lumen of the bowel may be termed a polypus. This broad usage of the term has brought about considerable confusion. Of the more unusual type may be mentioned fibromas, lipomas and myxomas arising from the areolar tissue of the bowel wall; myoma arising from the muscular coats, and hemangioma arising from the blood vessels. Certain other tumors arise outside the bowel wall but protrude into the lumen of the intestine in a polypoid fashion. Among these may be mentioned postsacral dermoid cysts and meningocele. Occasionally there is a polypoid growth due to parasites such as Oxyuris vermicularis or Schistosoma hematobium. This group does not compose more than 5 per cent of all polypoid tumors of the large bowel. Their

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