Case 192:   Focal Nodular Hyperplasia (FNH)

Diagnostic Category:

Clinical Presentation:

35 year old woman with diarrhea found to have an incidental mass on ultrasound.

CT: Typical, without scar, portal venous phase only

Imaging Findings:

Portal venous phase CT demonstrates a iso- to minimally hypodense FNH in segment 4a/2 with mass effect on adjacent vessels. Biopsy performed to exclude neuroendocrine tumor confirmed FNH.