title: MR findings in eosinophilic infiltration of the liver.
abstract: OBJECTIVE
  This study describes the findings of magnetic resonance imaging (MRI) of focal eosinophilic infiltration of the liver.
  
  
  METHODS
  Contrast-enhanced MR images of 8 patients with focal hepatic eosinophilic infiltration were reviewed retrospectively. We evaluated the signal intensity of focal lesions in T1-weighted and T2-weighted images and the pattern of enhancement in a dynamic contrast study.
  
  
  RESULTS
  A total 22 focal hepatic lesions were observed; the lesions were isointense (55%) or hypointense (45%) on T1-weighted images and isointense (14%) or hyperintense (86%) on T2-weighted images. The arterial phase of the contrast study revealed 11 hyperintense lesions (50%). During the portal and delayed phases, 18 (82%) and 17 lesions (77%) were hyperintense, respectively.
  
  
  CONCLUSIONS
  The focal eosinophilic infiltrations showed homogeneous enhancement in the portal and delayed phases in the dynamic contrast MR study. These findings should help to distinguish focal eosinophilic infiltration, especially from metastasis in patients with malignancy.
authors.affiliation: Department of Diagnostic Radiology, Ajou University, College of Medicine, Kyunggido, Korea.
authors.forename: Joo Sung
authors.initials: JS
authors.lastname: Sun
authors.forename: Jai Keun
authors.initials: JK
authors.lastname: Kim
authors.forename: Je Hwan
authors.initials: JH
authors.lastname: Won
authors.forename: Ki Myung
authors.initials: KM
authors.lastname: Lee
authors.forename: Jae Youn
authors.initials: JY
authors.lastname: Cheong
authors.forename: Young Bae
authors.initials: YB
authors.lastname: Kim
mesh_terms: D000368:Aged; D001706:Biopsy; D003003:Clonorchiasis / Q000175:diagnosis / Q000473:pathology; D003287:Contrast Media / Q000008:administration & dosage; D003937:Diagnosis, Differential; D004802:Eosinophilia / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D019786:Gadolinium DTPA; D006801:Humans; D017681:Hypereosinophilic Syndrome / Q000175:diagnosis / Q000473:pathology; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D008099:Liver / Q000473:pathology; D008107:Liver Diseases / Q000175:diagnosis* / Q000209:etiology; D008109:Liver Diseases, Parasitic / Q000175:diagnosis / Q000473:pathology; D008113:Liver Neoplasms / Q000175:diagnosis / Q000556:secondary; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D012680:Sensitivity and Specificity; D013274:Stomach Neoplasms / Q000175:diagnosis / Q000473:pathology; D014057:Tomography, X-Ray Computed
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA