DUPLEX ULTRASONOGRAPHIC EVALUATION OF LIVER-TRANSPLANTS

Two hundred and twenty-two duplex ultrasonographic examinations were p erformed on 36 liver transplants in 30 patients over a period of 5 yea rs and 9 months. Positive sonographic findings were correlated with 13 angiographic examinations. Arterial complications included 4 thrombos es, 5 stenoses, and one mycotic aneurysm. A false-negative result was obtained in 2 cases of stenosis and a false-positive result in one cas e of thrombosis. One portal vein thrombosis, 2 stenoses, and 2 cases o f portal hypertension were diagnosed correctly. Sensitivity was 87%, s pecificity 95%, and accuracy 93%. Duplex Doppler was least effective i n the diagnosis of hepatic artery stenosis. Five cases showed biliary complications of ischemic origin. Angiography is indicated when duplex Doppler is positive or doubtful, but also when the clinical condition is unclear.