The value of ultrasonic B-mode scanning in the diagnosis of persistent jaundice.

The use of ultrasonic B-mode scanning of the liver and biliary tract in patients with persistent jaundice is described. Sixty-seven consecutive jaundiced patients have been scanned. A correct diagnosis was obtained in 66 per cent, useful information in 26 per cent and in only 8 per cent was the information misleading or of no diagnostic value. In our opinion this simple and non-invasive technique is of great value in the definite diagnosis of persistent jaundice and should allow earlier surgery in the obstructive cases.