An anechoic area in the left lobe of the liver is a space-occupying hepatic lesion, which is usually considered to be a hepatic cyst or cystadenoma, and does not require any special treatment; if there are symptoms, further examination is needed according to the patient’s symptoms and signs to decide whether surgery is needed. Anechoic areas in the liver may be more commonly seen as liver cysts, or less commonly as cystadenomas. Hepatic cysts consist of a cyst wall and clear fluid in the cyst wall, the clear fluid will show up as anechoic areas in the transformed examination, and cystadenomas may also show up as anechoic areas in the ultrasound examination, which usually do not require special treatment. If the patient develops other symptoms such as abdominal distension, abdominal pain, etc., the nature of the anechoic area can be further determined by abdominal CT, and the treatment plan can be determined according to the nature and size of the anechoic area, which usually requires surgical treatment.