A decreased liver density CT value of 43 represents a low density value of liver tissue. Liver hypodensity is an imaging term that means that the liver is less dense than normal liver tissue on CT imaging, with a normal CT value of 40 to 60. Hypodensity is generally indicative of disease in the liver in terms of increased cellular size, liquefaction and necrosis. The most common causes of decreased liver density include fatty liver, cirrhosis, liver cysts, etc. It may also be due to malnutrition, obesity, heavy drinking, unhealthy weight loss, etc. Some malignant diseases may also lead to decreased density of the liver, such as hepatocellular carcinoma, etc. The CT examination can not determine the cause of the disease, and the patient needs to continue to improve the relevant examinations in order to identify the cause of the disease. It is recommended that patients improve the relevant examinations as soon as possible to clarify the cause of the disease, diagnosis and symptomatic treatment, so as to avoid delaying the condition.