Disorder/disease of the Large Intestines

Research 1 disorder/disease of the Large Intestines. Remember to state the disease, What is the prefix and the suffix? (Ex. "Gastroenteritis." Gastro:  stomach -- Enterisits: Inflammation of the intestines, especially the small intestines, usually accompanied by diarrhea.) Now, What are the symptoms? How is it diagnosed? How does it affect the body? How is it treated? Is it life threatening? What med's are used if any? How do people contact the disease? Any other info you can provide to help understand the disease.