Colon cleansing may be branded colon hydrotherapy, a colonic or colonic irrigation. Elderly&colon; diverticulitis, intestinal obstruction, colonic carcinoma, mesenteric ischemia, leaking aortic aneurysm. Bowel intussusception can occur with various benign colonic tumors. The invaginations are called the intestinal glands or colonic crypts. This truly reflects proximal intestinal bacterial activity, not distal or colonic activity. In particular, butyrate inhibits colonic tumor cells and stimulates proliferation of healthy colonic epithelial cells. A mucus layer protects the large intestine from attacks from colonic commensal bacteria. SHG microscopy was reported for the study of lung, colonic, esophageal stroma and cervical cancers. Gastric and colonic pacemakers have been tried. Bisacodyl stimulates enteric nerves to cause colonic contractions. Bisacodyl works by stimulating enteric nerves to cause peristalsis, i.e., colonic contractions. Toxic megacolon is an acute form of colonic distension. However, other causes are identified, including an increase in colonic epithelial apoptosis. Most people with colonic diverticulosis are unaware of this structural change. Antibiotic-associated diarrhea (AAD) results from an imbalance in the colonic microbiota caused by antibiotic therapy.