Case 56:   Focal Nodular Hyperplasia (FNH)

Diagnostic Category:

Clinical Presentation:

42 year old obese woman with incidental finding in segment 6.

CT: In hepatic steatosis

Imaging Findings:

CT shows biopsy proven FNH in segment 6. The lesion is hyperdense on all phases due to hepatic steatosis. The smaller denser focus of enhancement represents a small central artery ("spider artery"). Compare to the hyperenhancing FNH to the area of fatty sparing along the gallbladder fossa without hyperenhancement.