Hepatocellular Adenoma: Evaluation with Contrast-Enhanced Ultrasound and MRI and Correlation with Pathologic and Phenotypic Classification in 26 Lesions

Figure 1

Inflammatory HCA (with typical imaging features): (a) The 10 cm lesion located in segments VIII and IV shows a marked hypervascularity after contrast injection on CEUS, (b) which is persistent in the delayed phase. (c) It is slightly hypointense with the surrounding parenchyma on T1W images with (d) no signal drop-out on the chemical shift sequence and (e) a high signal intensity on T2W fat-suppressed images. (f) It has a strong arterial enhancement after gadolinium administration, (g) which is persistent in the delayed phase. (h) Photograph of the resected specimen revealing a well-circumscribed brown mass with some vessels cut in a transverse plane. (i, j) It shows typical aspects with obvious telangiectasia (70%) and inflammatory infiltrates (grade 3) (black arrows) around thick arteries.

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