Benign biliary neoplasms and biliary tumor precursors

Area of Science:

• Gastroenterology
• Pathology
• Oncology

Background:

• Benign biliary tumors are frequently discovered incidentally during medical imaging.
• While typically non-problematic, some benign tumors may have premalignant potential or transform into malignancy.
• Distinguishing benign from malignant biliary tumors presents a diagnostic challenge for pathologists.

Purpose of the Study:

• To discuss the histopathology of benign biliary tumors.
• To review biliary tumor precursors and their diagnostic criteria.
• To highlight the challenges in differentiating benign from malignant biliary lesions.

Main Methods:

• Histopathological analysis of benign biliary tumors.
• Review of literature on biliary tumor precursors.
• Focus on diagnostic criteria for differentiation.

Main Results:

• Benign biliary tumors encompass true neoplasms and reactive/malformative proliferations.
• Premalignant lesions include biliary mucinous cystic neoplasms, intraductal papillary neoplasms, and biliary intraepithelial neoplasia.
• Accurate histopathological assessment is key to distinguishing benign from malignant biliary tumors.

Conclusions:

• Understanding the histopathology of benign biliary tumors and their precursors is essential.
• Clear diagnostic criteria are needed to differentiate benign from malignant biliary lesions.
• Early and accurate diagnosis impacts patient management and prognosis.