Liver cancer is caused by a malignant tumor located on or within the liver. Stage 4 liver cancer is the most serious and life-threatening state of the illness. By the 4th stage of a liver cancer, the cancer has already irreversibly spread beyond the vicinity of the liver. The liver is the largest organ inside the human body. The liver is responsible for various involuntary tasks such as detoxifying blood, removing carcinogenic germs, and producing the necessary enzymes that are vital to the body. The liver acts as the body’s internal filter, and helps to remove harmful impurities. Liver cancer obsoletes the liver unless the tumor is immediately extracted. However, signs and symptoms of liver cancer often go unnoticed until it’s too late. A majority of patients plagued with liver problems are diagnosed with stage 4 liver cancers. The most effective way to prevent the cancer from further spreading in the body is to fully remove and replace the affected liver through a liver transplant.