Because colon cancer is such a common cancer, it is always considered as a possible diagnosis. Protrusion of the Rectum - Some older individuals will have weakened rectal support tissues. Part of the rectum then can project from the anus and bleed. This condition is called rectal prolapse. It can be felt as an abnormal bulging from the rectum when wiping.
Surgery is the only effective treatment.
Older people tend to have polyps and cancer more often. A tear of the anus may be the answer. Bleeding hemorrhoids may be the problem. The color and frequency of the bleeding are additional considerations. In most cases, the medical history provides clues, but never the final answer.