What are the causative factors of secondary liver cancer

Usually, secondary liver cancer is not caused by the liver itself, but by its close "neighbors"! Therefore, everyone should pay attention to organs such as the stomach, gallbladder, adrenal glands and bile ducts. Once you have the disease, you should seek early treatment to prevent the disease from worsening and causing cancer cells to spread to the liver, causing the disease. So what are the causes of this disease? Let's introduce the causes of secondary liver cancer.

Cancer cells mainly invade the liver through the blood circulation system. The liver is an organ with a large blood flow, and there are two systems in the human body that supply blood to the liver. One is the portal vein system. The venous blood of all organs in the abdominal cavity, including the stomach, small intestine, colorectum, pancreas, and spleen, is collected in the portal vein and then flows back to the liver, sending the absorbed nutrients to the liver to synthesize various substances necessary for the human body, and detoxifying the toxins produced by human metabolism.

At the same time, primary malignant tumor cells in these organs can also flow directly to the liver through this pathway, and then stay in the liver to form metastatic tumors. The liver's second blood supply system is the hepatic artery system, where fresh blood rich in oxygen supplied from the heart flows into the liver through the aorta, celiac artery, common hepatic artery, and proper hepatic artery. Primary malignant tumor cells in organs outside the abdominal cavity, such as the lungs, breasts, kidneys, and ovaries, generally flow back to the heart and then metastasize to the liver through the arterial system.