An elderly man with progressive focal nodular hyperplasia.

Area of Science:

• Hepatology
• Gastroenterology
• Radiology

Background:

• Focal nodular hyperplasia (FNH) is a benign liver lesion characterized by hepatocellular nodules.
• FNH predominantly affects young women, with rare occurrences in other demographics.

Observation:

• A 69-year-old man, post-renal pelvis carcinoma surgery, had no liver masses on initial surveillance CT scans.
• Ten years later, contrast-enhanced computed tomography (CECT) identified a hepatic mass, with subsequent MRI suggesting FNH.

Findings:

• The patient presented with a rare case of FNH in an elderly male.
• The FNH nodules demonstrated an increase in both number and size over time during follow-up.

Implications:

• This case expands the known demographic profile for FNH.
• Highlights the importance of vigilant surveillance for hepatic lesions, even in atypical patient populations.
• Suggests potential for nodular growth in FNH, warranting further investigation in elderly males.