Colon cancer diagnosis is often delayed due to absence of definite symptoms. The treatment option at this stage include surgical removal of the tumor along with affected surrounding organs. However, this treatment option is not viable in case the cancer has spread to other organs like liver, lungs etc. Five year survival rate for this cancer is about 8 to 15%.
It is pretty rare in western countries but quite common in developing countries. If stage 4 liver cancer goes untreated, about 90% of patients will succumb to disease within a year. If a successful liver transplant with no complications has been performed, the patient may leave for another 5 years. About 36% people may live beyond that.
Read more at Buzzle: http://www.buzzle.com/articles/stage4-cancer-survival-rate.html