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Arterially Enhancing Liver Lesions: Significance of Sustained Enhancement on Hepatic Venous and Delayed Phase With Magnetic Resonance Imaging

Brancatelli, Giuseppe MD*†‡; Federle, Michael P. MD‡; Baron, Richard L. MD§; Lagalla, Roberto MD†; Midiri, Massimo MD†; Vilgrain, Valérie MD∥

Journal of Computer Assisted Tomography: January/February 2007 - Volume 31 - Issue 1 - pp 116-124
doi: 10.1097/01.rct.0000232474.30033.06
Abdominal Imaging: Review Article

Benign hepatic vascular neoplasms and vascular pseudolesions are commonly encountered in magnetic resonance (MR) imaging. Most of these benign lesions demonstrate not only arterial-phase hyperintensity, but also persistent enhancement on venous and delayed imaging, unlike most malignant hepatic masses. These features, along with other MR findings and morphological characteristics, may allow for more confident diagnosis and distinction from hepatic malignancy. The objective of our study was to illustrate the MR imaging findings of hepatic lesions that demonstrate both early arterial and sustained enhancement on hepatic venous and delayed phase.

From the *Sezione di Radiologia, Ospedale Specializzato in Gastroenterologia, "Saverio de Bellis"-IRCCS, Castellana Grotte, Italy; †Sezione di Scienze Radiologiche, Università di Palermo, Italy; ‡Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, PA; §Department of Radiology, University of Chicago, IL; and ∥Service de Radiologie, Hopital Beaujon, Clichy, Paris, France.

Received for publication April 13, 2006; accepted May 14, 2006.

Reprints: Giuseppe Brancatelli, MD, Via Villaermosa 29, 90139 Palermo, Italy (e-mail: gbranca@yahoo.com).

© 2007 Lippincott Williams & Wilkins, Inc.