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[Gas gangrene as presentation of colonic carcinoma in familial adenomatous polyposis].

One case of gas gangrene by Clostridium septicum associated to colon cancer is herein presented. Spontaneous gas gangrene is often associated with neoplasms among which hematologic and colon neoplasms are the most frequent. The present case has also peculiarity that the colon cancer had developed from a familiar adenomatous polyposis syndrome.