There are numerous reasons why people develop liver cancer. Cancer is a disorder in which cells proliferate uncontrollably. They can grow throughout the body. Liver cancer occurs when cells in the liver become malignant and develop fast. The problem arises when the malignant cell causes the normal cells around it to become cancerous as well. When this occurs, cancer develops faster within the organ and has the potential to spread to other organs in the body. In such cases, it is life-threatening; therefore, it is critical to see a doctor if you notice any signs or symptoms.