Introduction — This topic includes links to society and government-sponsored guidelines from selected countries and regions around the world. We will update these links periodically; newer versions of some guidelines may be available on each society's website. Some societies may require users to log in to access their guidelines.

The recommendations in the following guidelines may vary from those that appear in UpToDate topic reviews. Readers who are looking for UpToDate topic reviews should use the UpToDate search box to find the relevant content.

Links to related guidelines are provided separately. (See "Society guideline links: Hepatocellular carcinoma" and "Society guideline links: Liver resection and ablation".)

International

●World Federation for Ultrasound in Medicine and Biology (WFUMB): Guidelines and good clinical practice recommendations for contrast-enhanced ultrasound (CEUS) in the liver, update (2020)

Canada

●Choosing Wisely Canada: Don't perform computed tomography (CT) or magnetic resonance imaging (MRI) routinely to monitor benign focal liver lesions (e.g., focal nodal hyperplasia, hemangioma) (updated 2017)

United States

●Choosing Wisely: Don't use a protocol for abdominal CT that includes unenhanced CT followed by IV contrast-enhanced CT, except for the following indications: renal lesion characterization, hematuria work up, indeterminate adrenal nodule characterization, follow-up after endovascular stent repair, gastrointestinal hemorrhage or characterizing a focal liver mass (2017)

●American College of Gastroenterology (ACG): Clinical guideline for the diagnosis and management of focal liver lesions (2014)

●American College of Radiology (ACR): ACR Appropriateness Criteria liver lesion – Initial characterization (1998, reviewed 2014)

Europe

●European Association for the Study of the Liver (EASL): Clinical practice guidelines on the management of benign liver tumours (2016)