OBJECTIVE: The purpose of this article is to describe the "pseudo washout" sign of high-flow hepatic hemangioma that mimics hypervascular tumor on gadoxetic acid-enhanced MRI. CONCLUSION: High-flow hemangiomas might show relatively low signal intensity because of gadoxetic acid contrast uptake in the surrounding normal liver parenchyma during the equilibrium (3-minute delay) phase. Such findings are called pseudo washout and can mimic hypervascular hepatic tumors. However, high-flow hemangioma can be diagnosed by observing bright signal intensity on T2-weighted imaging, arterial phase-dominant enhancement, pseudo washout sign during the equilibrium phase, and isointense or slightly increased signal intensity on subtraction images.
OBJECTIVE: The purpose of this article is to describe the "pseudo washout" sign of high-flow hepatic hemangioma that mimics hypervascular tumor on gadoxetic acid-enhanced MRI. CONCLUSION: High-flow hemangiomas might show relatively low signal intensity because of gadoxetic acid contrast uptake in the surrounding normal liver parenchyma during the equilibrium (3-minute delay) phase. Such findings are called pseudo washout and can mimic hypervascular hepatic tumors. However, high-flow hemangioma can be diagnosed by observing bright signal intensity on T2-weighted imaging, arterial phase-dominant enhancement, pseudo washout sign during the equilibrium phase, and isointense or slightly increased signal intensity on subtraction images.
Authors: Seo-Youn Choi; Young Kon Kim; Ji Hye Min; Dong Ik Cha; Woo Kyoung Jeong; Won Jae Lee Journal: Eur Radiol Date: 2017-03-24 Impact factor: 5.315
Authors: Hanke J Schalkx; Marijn van Stralen; Kenneth Coenegrachts; Maurice A A J van den Bosch; Charlotte S van Kessel; Richard van Hillegersberg; Karel J van Erpecum; Helena M Verkooijen; Josien P W Pluim; Wouter B Veldhuis; Maarten S van Leeuwen Journal: Eur Radiol Date: 2014-07-05 Impact factor: 5.315