abnormal stool AE mucous stool AE KM, YH An abnormal stool AE that has an outcome of a significant amount of mucus in the stool. The mucus is accompanied by diarrhea, pain or blood may signify an intestinal condition such as infection or inflammation. Increased amounts of mucus in the stool can also occur with cancers of the colon or rectum or with bowel obstruction. WEB: http://www.healthgrades.com/symptoms/mucus-in-stool 10028140