[Special methods of examination in the diagnosis of cholelithiasis].

Rational combination of special methods of examination yields exact, objective, and detailed information for the diagnosis of cholelithiasis. Ultrasonic examination (USE) is an absolutely noninvasive method and therefore precedes all the other methods. USE suffices for the diagnosis of uncomplicated calculous cholecystitis. USE and intravenous cholegraphy are indicated in complicated cholecystitis without jaundice, USE and percutaneous transhepatic cholegraphy--in the presence of jaundice. These methods of examination are supplemented with endoscopic retrograde cholangiopancreatography in cases which are difficult for differential diagnosis and in those with cicatricial strictures of the bile ducts. Laparoscopy and aspiration biopsy of the liver usually complete the examination. In emergencies diagnostic laparoscopy, despite its definite invasive character, is conducted after USE.