Bowel cancer is the growth of malignant cells in the colon or rectum. For this reason, also it called colorectal cancer. It is very rare for cancer events in small intestine. Usually, due to chronic intestinal diseases such as ulcerative rettolite or Crohn's disease, as well as some familial predisposition. Often it is a cancer that does not apparent symptoms, and therefore the mortality rate is very high. Early diagnosis increases chances of survival.