The colon is a hollow organ located in the abdominal cavity, connecting the ileum and the rectum. The colon is about 150cm long, the first part is the cecum and the last part is the sigmoid colon, shaped like a sigmoid. The main function of the colon is to absorb water and minerals remaining after a part has been absorbed by the small intestine and store feces until it is expelled. However, this organ often suffers from diseases such as inflammation, ulcers, polyps, cancer, etc.