A colon and rectal surgeon is an expert in the management of diseases affecting the colon and rectum. In addition to being trained as a general surgeon, he/she has completed advanced training in the treatment of colorectal disorders. This usually includes treatment of conditions related to the small intestine, large intestine (colon), rectum and anus. A colon and rectal surgeon can treat benign diseases, such as crohn’s disease, ulcertive colitis and diverticulitis, as well as malignant diseases, such as colorectal cancer. He/she also has expertise in treating disorders of the anus, such as hemorrhoids, fissures, fistula etc.