A case of mucosal prolapse syndrome.

A case of mucosal prolapse syndrome in the rectum is reported. A 61-year-old female presented complaining of bloody discharge and constipation for 2 months. Colonoscopy revealed an elevated lesion on the left anterior wall of the rectal canal. Biopsy showed glandular proliferation and fibromuscular obliteration of the lamina propria, findings characteristic of mucosal prolapse syndrome. It is a rare disorder affecting the rectum because the lesion looks macroscopically like a protruding adenoma.