The causes of mild outward expansion of the liver include inflammation, stones, malignant tumors, etc. If it is caused by inflammation or stones, it is usually not serious, but if it is caused by malignant tumors, we need to be more vigilant. 1. Inflammation: When inflammation occurs in the liver, liver cells will degenerate, which in turn leads to congestion and enlargement of the liver, showing outward expansion. Usually, as long as the treatment is active, the prognosis will be good, so the mild outward expansion of the liver caused by inflammation is not serious. 2. Stones: Intrahepatic bile duct stones will lead to bile blockage, causing the bile ducts to dilate, which in turn will lead to mild outward dilatation of the liver. Symptoms will be gradually relieved by active medication or surgical treatment, so it is not a serious condition. 3. Malignant tumors: if the liver is dilated outward due to malignant tumors such as primary liver cancer, it means that the cancer cells grow faster and the tumor size may be larger, showing the symptom of outward liver dilation. This situation is more serious, and the specific severity should be decided according to the tumor staging. 4. Benign occupations: benign occupations such as hepatic hemangioma and hepatic cyst can also lead to mild outward expansion of the liver, which usually has a good prognosis after surgical treatment and is not serious. There are many reasons for mild outward expansion of the liver, in order to avoid serious situations, you should consult a doctor in time for examination and follow the doctor’s instructions to treat the cause of the disease.