title: "Pseudo washout" sign in high-flow hepatic hemangioma on gadoxetic acid contrast-enhanced MRI mimicking hypervascular tumor.
abstract: 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.
  
  
  CONCLUSIONS
  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.affiliation: Department of Radiology, Korea University Guro Hospital, Korea University College of Medicine, 80 Guro-dong, Guro-gu, Seoul 152-703, Korea.
authors.forename: Kyung Won
authors.initials: KW
authors.lastname: Doo
authors.forename: Chang Hee
authors.initials: CH
authors.lastname: Lee
authors.forename: Jae Woong
authors.initials: JW
authors.lastname: Choi
authors.forename: Jongmee
authors.initials: J
authors.lastname: Lee
authors.forename: Kyeong Ah
authors.initials: KA
authors.lastname: Kim
authors.forename: Cheol Min
authors.initials: CM
authors.lastname: Park
mesh_terms: D000368:Aged; D001706:Biopsy; D003287:Contrast Media; D003937:Diagnosis, Differential; D019786:Gadolinium DTPA; D006391:Hemangioma / Q000098:blood supply / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D008113:Liver Neoplasms / Q000098:blood supply / Q000175:diagnosis* / Q000473:pathology; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D018084:Ultrasonography, Interventional
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; C073590:gadolinium ethoxybenzyl DTPA; C090600:gadobutrol; D019786:Gadolinium DTPA