[Ultrasonic examination in biliary tract diseases].

The authors consider that ultrasonic examination is a simple, safe and highly informative method of examination having no contraindications. Due to its high informative value the USE is of decisive significance in diagnosis of cholelithiasis. The obtaining of more exact diagnosis of "acalculous cholecystitis" requires strict interpretation of all the findings of ultrasonic examination. The ultrasonic symptomatology of noninflammatory diseases of the bile duct requires more exact details.