A hypoechoic mass visible in the right posterior lobe of the liver may be due to benign lesions such as hepatic cysts, hemangiomas and nodular foci of the liver. 1. Liver cyst:A hypoechoic mass seen in the right posterior lobe of the liver is commonly a benign non-parasitic cyst, which has no symptoms in the early stages, but may become locally distended and painful in the later stages. 2. Hemangioma: When hemangioma appears in the body surface, it will lead to hypoechoic mass in the right posterior lobe of the liver, which mainly has the symptoms of localized bulging and capillary dilatation, and can be treated under the guidance of the doctor. 3. Liver nodules: Liver nodules need to be examined in time to determine whether they are malignant nodules; if they are not malignant and do not affect normal life, they do not need special treatment and can be treated by adjusting lifestyle; if they are malignant, they need targeted treatment. In the right posterior lobe of the liver can be seen after a hypoechoic mass, you need to consult a doctor, identify the symptoms, follow the doctor’s instructions to take drugs and the next step in the treatment.