[Local pseudocancerous inflammatory polyposis in Crohn's disease of the colon. Usefulness of coloscopy (author's transl)].

In Crohn's granulomatous colitis large pseudopolyps may produce local lesions with radiological images resembling cancer. In the case reported here, three successive lesions of similar radiological appearance located on different sites were found on post-operative examination to be proliferative pseudopolyps adjacent to typical granulomas. In all previously published cases, even when the patient was known to have Crohn's disease colectomy was invariably performed, probably for fear of a malignant tumour. Coloscopy, and particularly biopsies showing non-malignant lesions, could result in conservative treatment. Granulomas are more exceptionally found.