Foul smelling anal discharge reddish brown 48 year old husband what could it be? i have picture. of discharge.

Needs evaluation: Can be many different things depending in part on associated symptoms (colites, inter spheric abscess, large distal polyp, or a tumor). The type of bleeding is potentially worrisome and need prompt evaluation.

Concerning: One thing I am concerned about here is a tumor in the colon or rectum. Sometimes they can produce mucus and cause bleeding. When you put the two together, it produces a foul discharge. See your doctor about a colonoscopy. Don't delay.