Written and medically reviewed by: Assoc. Prof. Cengiz Dibekoğlu, MD, General SurgeryLast updated:
Liver Disease — FNH and Hepatocellular Adenoma
Benign solid liver lesions
Focal nodular hyperplasia (FNH) and hepatocellular adenoma are benign solid lesions—distinct from hemangioma. MR often separates them. FNH is usually observed. Adenoma size, subtype, bleeding risk, and (rarely) malignant potential guide follow-up or surgery—especially with hormone exposure in women.
Educational schematic. Some structures may be simplified or emphasized for clarity; not an exact anatomical depiction.
© Cengiz Dibekoğlu — illustrative; not for unauthorized use
Figure summary
This educational figure shows: FNH and adenoma.
Key points
FNH
Central scar pattern on MR is classic. Asymptomatic lesions are usually watched; large symptomatic ones may discuss resection.
Adenoma
Risk rises with size, growth, androgen exposure, and certain subtypes. Bleeding or malignant transformation is rare but real—plan is individualized.
Why classification matters
Benign does not mean ignore. Wrong label leads to wrong treatment—especially confusing adenoma with hemangioma.
- Key note inside
Who needs closer follow-up?
Men, large lesions, beta-catenin–activated subtypes, or pregnancy plans may shift toward resection regardless of size.
More chapters in this hub
Liver Cysts
Simple vs complex cysts — when observation is enough
Hydatid Cyst
Echinococcosis — albendazole, PAIR, and surgery
Liver Disease Diagnosis
How clinicians confirm the problem and stage the next steps
Liver Tumors
Tumors — explained for shared decision-making
Colorectal liver metastases
When colon or rectal cancer has spread to the liver
Liver Disease Treatment
How treatment options are matched to risk, stage, and goals
Fatty Liver Disease
MASLD / MASH (formerly NAFLD / NASH) and metabolic risk
Viral Hepatitis
Hepatitis B and C — chronic care
Liver Abscess
Fever, drainage, and antibiotics
Liver Hemangioma
Common benign vascular tumor
Cirrhosis
Chronic injury and complications
Variceal Bleeding
Portal hypertension emergency
Appointment / info
This page is for education. It is not medical advice and does not replace a visit with your physician.
Medical editor: Assoc. Prof. Cengiz Dibekoğlu, MD · Last medically reviewed: August 2026 · English patient-education chapter.