Spontaneous rupture of the distal colon with evisceration of small intestine through the anus: report of two cases and review of the literature.

Two cases of evisceration of the small intestine through a spontaneous perforation of the distal large bowel are presented, and the literature is reviewed. The condition is associated with a sudden increase in intra-abdominal pressure and a past history of rectal prolapse. The etiology and management of this problem are discussed.