Focal Nodular Hyperplasia
Also written as FNH.
Focal Nodular Hyperplasia (FNH): Characterized by a central stellate scar; no link to OCPs or malignant potential, no rupture risk.
What our notes say
- Focal Nodular Hyperplasia (FNH): Characterized by a central stellate scar; no link to OCPs or malignant potential, no rupture risk. (Liver Tumors: Benign and Malignant Overview)
- What is the most probable benign liver tumor? → Focal Nodular Hyperplasia (FNH) (Liver Tumors: Benign and Malignant Overview)
- Classification Benign: - Non-neoplastic: Cysts (simple, congenital, choledochal, polycystic), focal nodular hyperplasia - Neoplastic: Hemangioma (most common), adenoma (Liver Histology & Physiology)
- Focal Nodular Hyperplasia (FNH) - Central stellate scar ⭐ - NOT associated with OCPs - No malignant potential - No rupture risk (Liver Histology & Physiology)
Study material on Focal Nodular Hyperplasia
- Liver Histology & Physiology
- Liver Histology & Physiology
- Liver Tumors: Benign and Malignant Overview
- Liver Tumors: Benign and Malignant Overview
- Liver Tumors: Benign and Malignant Overview
- Weekly Pathology Exam - March 7, 2026 (Section A: MCQs)
- MCQ: Ompath Study Home Blog Flashcards MCQs Dashboard Toggle the
Practice questions on Focal Nodular Hyperplasia
A 30-year-old female smoker on OCPs for 10 years has a 5 cm encapsulated liver mass. Which feature differentiates this (Adenoma) from Focal Nodular Hyperplasia (FNH)?
- Presence of bile ducts
- Absence of a central scar
- Response to OCP cessation
- Occurrence in women
Answer: B. Adenomas lack the central stellate scar and the anomalous bile ductules found in the fibrous septa of FNH. ---
A 30-year-old female, who has been taking oral contraceptives for 10 years, develops an asymptomatic liver lesion. Imaging shows a 5 cm solitary, encapsulated mass. Which of the following differentiates this tumor from Focal Nodular Hyperplasia (FNH)?
- Presence of a central stellate scar.
- Lack of malignant potential.
- Regression upon discontinuation of oral contraceptives.
- Absence of hemorrhage risk.
Answer: C. Liver cell adenomas are strongly linked to OCPs and regress upon their cessation, a key differentiator from FNH which is not hormone-related and lacks this regression. ---