The presence of low density nodule in the right lobe of the liver means that the patient has occupancy in the right lobe of the liver. At present, if the patient has emaciation, it is firstly considered that the patient has hepatocellular carcinoma, and of course, benign tumors, such as common hepatic hemangiomas in clinic, are not ruled out either. In addition to wasting, patients with liver cancer may also have abdominal pain, abdominal distension, nausea and vomiting, and yellowish face, etc. It is necessary to further perform abdominal enhanced CT examination and check the tumor marker AFP, so as to make a clear diagnosis, and early surgical resection of liver cancer is helpful for prolonging the patient’s life and improving his/her quality of life. Patients with hepatic hemangioma and hepatic cysts, presenting with low-density nodules, if the volume is small, further observation is needed, and regular rechecking of abdominal ultrasound is needed to know the volume change; if the volume of hepatic cyst is large, it will cause compression effect on the surrounding tissues and organs, and surgery is needed to treat the hepatic cyst. If the patient has any discomfort, he should go to the hospital in time, and should not be careless so as not to delay the treatment.