The appearance of small nodular enhancement shadow in the right lobe of the liver is the result of CT examination, which may be due to hepatitis, cirrhosis, hepatocellular carcinoma and other etiological factors, and a large amount of fibrous tissue hyperplasia occurs after hepatocyte injury and necrosis, forming regenerative nodules. 1. Hepatitis: uniform enlargement of liver can be seen in the inflammatory stage, and the surface of liver unevenly presents waves or even nodularity. 2. Cirrhosis: multiple slightly high-density nodules in the CT liver with uneven liver density. Cirrhosis pseudo lobe formation, re-formation of new fibrous septum surrounding the liver. Enhanced scan shows mild enhancement of cirrhotic nodules in arterial phase. 3. Hepatocellular carcinoma: On enhanced scan, obvious patchy and nodular enhancement can be seen in early stage. If there is abnormality in liver imaging, do not use drugs by yourself. It is necessary to seek medical treatment as soon as possible to avoid aggravating liver lesions.