Not excluded is that it may be, considered to be, but this possibility is generally rare, for example, if a mass occurs in the patient’s liver, it is generally considered to be a benign lesion by ultrasound or CT. But after all, there is no puncture, no pathology, so the ultrasonographer and the doctor in the CT room can not be 100% sure about the nature of the mass, so the diagnosis of liver occupying may be given, not excepting the case of hepatocellular carcinoma. If the patient wants to confirm the diagnosis, a PET-CT or a puncture of the liver may be needed to confirm the diagnosis. Alternatively, laparoscopic resection of the liver mass can be performed, and the complete removal of the mass can be sent for pathologic examination to further confirm the diagnosis.