Focal Nodular Hyperplasia and Focal Nodular Hyperplasia–like Lesions. July-August 2022-RG210156-2022-LeGout-SG

RG210156-2022-LeGout-SG

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The document is a study guide for a self-assessment (SA-CME) test related to the topic of Focal Nodular Hyperplasia (FNH) and FNH-like lesions. The test is part of an educational activity available at rsna.org, where participants must complete the test online to receive credit. The guide provides a series of multiple-choice questions that explore various conditions and imaging characteristics associated with these liver lesions.<br /><br />1. The first question asks which condition is commonly associated with FNH-like lesions, with options including Primary Sclerosing Cholangitis, Budd-Chiari Syndrome, Hepatic Steatosis, and Caroli Syndrome.<br /><br />2. The second question examines the characteristic MRI appearance of the central scar in an FNH lesion. The options suggest different combinations of T2 and T1 signal intensities, such as T2 hyperintense and T1 hypointense.<br /><br />3. The third question focuses on typical imaging features of hepatic involvement in Hemorrhagic Hereditary Telangiectasia (HHT), providing choices such as the formation of hepatocellular carcinoma, multiple hepatic hemangiomas, enlarged hepatic arteries, and narrowing or occlusion of the hepatic veins.<br /><br />4. The fourth question concerns conditions associated with the development of Nodular Regenerative Hyperplasia (NRH), offering options like HHT, Alcoholic Cirrhosis, long-term use of oral contraceptives, and Common Variable Immunodeficiency Syndrome.<br /><br />5. The fifth question discusses hepatobiliary phase uptake patterns in FNH as seen with hepatocyte-specific MRI contrast agents, listing potential patterns such as targetoid uptake, hypointense with peripheral ring uptake, heterogeneous isointense uptake, and hypointense with perilesional retention.<br /><br />Overall, the study guide is designed as a preparatory tool to help test-takers understand and recall key aspects related to FNH and related liver lesion imaging and diagnoses.

Keywords

Focal Nodular Hyperplasia

FNH-like lesions

self-assessment

SA-CME

liver lesions

MRI imaging

Nodular Regenerative Hyperplasia

hepatobiliary phase

Hemorrhagic Hereditary Telangiectasia

rsna.org