Non-neoplastic nodular lesions in the liver

Area of Science:

• Hepatology
• Pathology
• Gastroenterology

Background:

• Classical liver nodule nomenclature requires revision due to new data.
• Non-neoplastic liver nodules are rare but diagnostically important.
• Accurate classification is essential for patient management.

Purpose of the Study:

• To review current terminology for non-neoplastic liver nodules.
• To differentiate these lesions from neoplastic hepatic nodules.
• To provide a comprehensive overview of nodular liver pathology.

Main Methods:

• Histopathological review of liver specimens.
• Analysis of current scientific literature.
• Comparison of neoplastic and non-neoplastic nodular lesions.

Main Results:

• Non-neoplastic nodules include focal nodular hyperplasia, regenerative hyperplasia, pseudonodules, hamartomas, and others.
• These nodules vary in prevalence in cirrhotic versus non-cirrhotic livers.
• Pathogenesis may involve circulatory disturbances, hormonal imbalance, metabolic issues, or infection.

Conclusions:

• Updated knowledge of non-neoplastic liver nodules is vital.
• Precise diagnosis requires differentiating these from neoplastic nodules.
• This review aids in accurate histopathological diagnosis of liver lesions.