Colonic Development, Embryology, Structure and Function. Colonic and Rectal Obstruction. Incontinence. Rectal Prolapse. Constipation (including sigmoidocele, retocele). Colonoscopy. Radiology of the Colon. Laparoscopic Surgery of the Colon. Anorectal Physiology Testing. Endoanal and Endorectal Ultrasound. Biofeedback for Pelvic Floor Disorders. Infectious Colitis. Pseudomembranous Colitis. Colon Ischemia. Radiation Injury to the Colon: Colopathy and Proctopathy. Acute Lower Gastrointestinal Tract Bleeding. Vascular Disorders of the Colon. Irritable Bowel Syndrome. Diverticular Disease. Megacolon. Pseudoobstruction (Ogilvie's Syndrome), Cathartic Colon - Laxative Abuse and Melanosis. Volvulus. Adenoma/Adenocarcinoma (excluding adenomatous polyposis). Other Benign and Malignant Colonic Tumors. Intestinal Polyposis Syndromes and Hereditary Colorectal Cancer. Ulcerative Colitis. Crohn's Disease of the Colon. Other Colitides: Microscopic Colitis, Eosinophilic Colitis, and Neurtopenic Enterocolitis. Diversion Colitis and Pouchitis. Hemorrhoids. Anal Fissures, Ulcers and Stenosis. Fistulas-in-Ano and Abscesses. Anorectal Neoplastic Disorders. Miscellaneous Colonic Disorders. The Colon and Systemic Disease. Medications, Toxins and the Colon.