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Contrast-enhanced sonographic appearances of two primary hepatic epithelioid angiomyolipomas |
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| Authors: | Victor Chai MD Adrian Fox MD Lynn Chong PhD Eloise House MD Tom Sutherland MD |
| Institution: | 1. Upper Gastrointestinal and Hepatobiliary Surgical Unit, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia;2. Upper Gastrointestinal and Hepatobiliary Surgical Unit, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia
Upper Gastrointestinal and Hepatobiliary Surgical Unit, Eastern Health, Fitzroy, Victoria, Australia;3. Anatomical Pathology, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia;4. Medical Imaging Department, St Vincent's Hospital Melbourne, Fitzroy, Victoria, Australia Faculty of Medicine, University of Melbourne, Parkville, Victoria, Australia |
| Abstract: | Epithelioid hepatic angiomyolipoma (Epi-HAML) is a rare hepatic tumor frequently misdiagnosed as hepatocellular carcinoma (HCC). Unlike conventional angiomyolipoma (AML), Epi-HAML contains minimal amount of adipose tissue, which is a radiological distinguishing feature between AML and HCC. Two patients were referred for management of incidentally found hepatic lesions confirmed to be Epi-HAML on post-resection tissue analysis. CT and MRI findings were suggestive of HCC. Contrast-enhanced ultrasound demonstrated intratumoral shunting, a feeding artery, and early draining hepatic vein. These findings should alert radiologists to the possibility of Epi-HAML. Furthermore, these features may be better assessed by contrast-enhanced ultrasound due to its superior dynamic temporal resolution. |
| Keywords: | angiomyolipoma contrast-enhanced ultrasound epithelioid angiomyolipoma liver ultrasound |