Rectal prolapse is when the end of the large intestine (rectum) out through the anus. The externalization of the rectum may be only the mucosa, the entire wall or consist of a descent through the year without going outside. Rectal prolapse may be caused by the weakness of the tissues that support the rectum, constant efforts when to evacuate, constipation, aging or genetic causes. The most common symptom is a red lump or mass on the year, usually after a deposition. There may also be bleeding, mucus, involuntary leakage of gas or fecal incontinence. Rectal prolapse can be treated effectively with surgery, removing a portion of the intestine (perineal rectosigmoidectomy) or suturing the rectum to the surrounding tissue. You can also place a piece of synthetic mesh around the rectum so that it stays in place (rectopexy).