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Although most patients with colonic diverticula have no symptoms, perforation or bleeding can be troublesome. Recently, we treated an elderly patient with a diverticular perforation of the sigmoid colon who required a loop colostomy and later resection of the diseased colon. Between the operations, the colostomy resembled a sea slug with horns, which represented eversions of the diverticula. This interesting phenomenon suggests that diverticula may be everted as pseudopolyps and ligated endoscopically. Therefore, the procedure was tested on a Landrace pig, of which the large bowel wall was pulled with an endoscope at 9 different sites using forceps (n=6) or suction (n=3) and ligated. Four days later, reexamination revealed total necrosis at 8 sites and ulceration at 1. The animal was well. The bowel removed 2 weeks later showed mucosal fold convergences without perforations. Our procedure can be used for prophylactic or therapeutic treatment of patients with colonic diverticula.

Eversion and Ligation of a Diverticulum: Report of an Inspirational Case and Subsequent Animal Study