ARRS 2022 Abstracts

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E1850. Imaging of Mimics of Hepatocellular Carcinoma
Authors
  1. Sara Sartaj; SSM Health St. Mary's Hospital
  2. Mohammed Siddiqui; MU Health Care
Background
Most management guidelines for hepatocellular carcinoma (HCC) accept typical imaging findings alone as method of diagnosis without need for tissue sampling. Early detection is important, as small tumors are amenable to various potentially curative treatments.

Educational Goals / Teaching Points
The goal of this exhibit is to review the imaging findings of mimics of HCC.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Typical imaging features (LI-RADS version 2018) include major ancillary features favoring HCC or malignancy in general. Imaging mimics include: cholangiocarcinoma in cirrhotic, cholangiocarcinoma mimicking infiltrative HCC, primary hepatic lymphoma, hepatic lymphoma in cirrhotic, carcinoid metstastis, gastrointestinal stromal tumor, sclerosed hemangioma, focal nodular hyperplasia, hepatic adenoma, bleeding hepatic adenoma, hepatic abscess, hepatic inflammatory pseudotumor, focal fat sparing, geographic fatty deposition, and non-tumorous vascular shunts.

Conclusion
It is crucial to recognize potential mimics of HCC to avoid false-positive and false-negative diagnosis. Multimodality imaging along with clinical and laboratory findings can be helpful to reach the accurate diagnosis.