MR findings in eosinophilic infiltration of the liver.
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.
Sun
Joo Sung
JS
Department of Diagnostic Radiology, Ajou University, College of Medicine, Kyunggido, Korea.
Kim
Jai Keun
JK
Won
Je Hwan
JH
Lee
Ki Myung
KM
Cheong
Jae Youn
JY
Kim
Young Bae
YB
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
D003287:Contrast Media; D019786:Gadolinium DTPA