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Focal Fatty Infiltration of the Liver

Analysis of Prevalence and CT Findings in Children and Young Adults

Bamidele F. Kammen1,2, Preeyacha Pacharn1, Ruedi F. Thoeni1, Ying Lu1, Aliya Qayyum1, Fergus Coakly1, Charles A. Gooding1,3 and Robert C. Brasch1,3

1 Department of Radiology, University of California—San Francisco, 505 Parnassus AVe. (M-372), San Francisco, CA 94143.
2 Present address: Department of Radiology, Children's Hospital Oakland, 747 Fifty-Second St., Oakland, CA 94609.
3 Department of Pediatrics, University of California San Francisco, San Francisco, CA 94143.



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  		Fig. 1A. —17-year-old girl with renal transplant, taking steroids and immunosuppressants, with focal fatty infiltration of liver. Contrast-enhanced CT scan obtained during portal venous phase reveals focal hypodense region (arrow) in medial segment of left lobe of liver adjacent to falciform ligament.

 


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  		Fig. 1B. —17-year-old girl with renal transplant, taking steroids and immunosuppressants, with focal fatty infiltration of liver. T1-weighted in-phase MR image does not reveal lesion in A.

 


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  		Fig. 1C. —17-year-old girl with renal transplant, taking steroids and immunosuppressants, with focal fatty infiltration of liver. T1-weighted out-of-phase MR image shows focal loss of signal (arrow) in liver corresponding to lesion in A.

 


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  		Fig. 2A. —13-year-old girl with renal laceration and focal fatty infiltration of liver. Contrast-enhanced CT scan during portal venous phase of enhancement shows small ovoid low-density lesion (arrow) in medial segment of left lobe of liver adjacent to falciform ligament.

 


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  		Fig. 2B. —13-year-old girl with renal laceration and focal fatty infiltration of liver. Delayed CT image at same level shows persistence of lesion (arrow) described in A.

 


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  		Fig. 3A. —18-year-old man with pancreatitis and focal fatty infiltration of liver. Unenhanced (A) and enhanced (B) CT scans show geometric low-density liver lesion (arrow) in left lobe of liver adjacent to falciform ligament.

 


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  		Fig. 3B. —18-year-old man with pancreatitis and focal fatty infiltration of liver. Unenhanced (A) and enhanced (B) CT scans show geometric low-density liver lesion (arrow) in left lobe of liver adjacent to falciform ligament.

 


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  		Fig. 3C. —18-year-old man with pancreatitis and focal fatty infiltration of liver. T1-weighted out-of-phase MR image shows low-signal-intensity focus (arrow) adjacent to falciform ligament corresponding to lesion described in A and B.

 


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  		Fig. 4. —19-year-old woman with osteosarcoma of pelvis receiving chemotherapy, having focal fatty infiltration of liver. Contrast-enhanced CT scan during portal venous phase of enhancement shows hypoattenuating geometric lesion in medial and lateral segments of left lobe of liver adjacent to falciform ligament (arrows).

 

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