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Canadian Journal of Gastroenterology
Volume 25, Issue 11, Pages 621-625
http://dx.doi.org/10.1155/2011/367643
Review

Usefulness of Endoscopic Ultrasonography in Hepatology

Julien Bissonnette,1 Sarto Paquin,2 Anand V Sahai,2 and Gilles Pomier-Layrargues1

1Liver Unit, Centre Hospitalier de l’Université de Montréal, Montréal, Québec, Canada
2Gastroenterology Unit, Centre Hospitalier de l’Université de Montréal, Montréal, Québec, Canada

Received 11 January 2011; Accepted 27 May 2011

Copyright © 2011 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Endoscopic ultrasonography (EUS) is used to evaluate patients with hepatobiliary diseases. The technique is useful for the diagnosis of esogastric varices in selected cases of portal hypertension, and to evaluate the pathogenic role and prognostic value of the collateral circulation in patients with this condition. When coupled with the Doppler technique, EUS can be used to guide injection sclerotherapy and to verify the obliteration of varices (particularly fundal varices) after endoscopic treatment. Hemodynamic changes induced in the collateral circulation by vasoactive drugs can also be measured with Doppler-EUS. Fine-needle aspiration under EUS guidance is useful in the diagnosis of focal liver lesions and perihepatic adenopathy, and in the evaluation of biliary tract diseases. New indications can be developed in the future after adequate experimental validation.