Giant Sigmoid Diverticulum

Giant sigmoid diverticulum is unusual, with only 103 cases previously reported in the world literature.These lesions probably arise as pseudodiverticula of the sigmoid colon with herniation of the mucosa through the muscle wall. The flap-valve mechanism with fibromuscular hyperplasia at the diverticular orifice seen by the pathologist confirms how this giant colonic diverticulum probably developed.All patients with giant sigmoid diverticula are generally elderly, with an age range of 40 to 90 years. The 19% complication rate associated with giant sigmoid diverticulum is relatively high.They are best treated by resection of the diverticulum, in continuity with the involved sigmoid, and primary anastomosis.

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