[Ultrasonic diagnosis of benign focal lesions of the liver].

Proceeding from a study of an ultrasound picture of liver focal changes of benign nature in 60 patients a conclusion was made that nonparasitic cysts could be verified on the basis of a typical ultrasound picture and its stability over time. The presence of daughter cysts and septal membranes was indicative of unilocular hydatid disease. Additional laboratory investigations were necessary for the recognition of alveolar hydatid disease. It was desirable that the diagnosis of liver abscess and hematoma should be confirmed by fine needle spot puncture. By their ultrasound picture benign liver tumors did not differ significantly from malignant ones. To exclude the latter fine needle spot puncture was necessary. Hemangioma should be verified by angiography, the rest of benign tumors--by histology.