Imaging of benign biliary pathologies.

Area of Science:

• Gastroenterology and Hepatology
• Radiology
• Medical Imaging

Background:

• Biliary tree pathologies encompass a broad range of benign and malignant conditions.
• Benign diseases, including congenital and acquired conditions, present diverse prognoses and management strategies.
• Distinguishing benign from malignant biliary processes is often difficult based on imaging alone.

Purpose of the Study:

• To review the imaging characteristics of various benign biliary tree pathologies.
• To assist clinicians in constructing a differential diagnosis for benign biliary conditions.
• To emphasize the role of imaging in identifying and differentiating benign from malignant biliary diseases.

Main Methods:

• Review of imaging findings for common benign biliary pathologies.
• Discussion of diagnostic modalities including ultrasound, MRI/MRCP, and direct cholangiography.
• Focus on specific imaging features such as dilatation, cystic anomalies, obstruction, inflammation, ischemia, strictures, pneumobilia, and hemobilia.

Main Results:

• Benign biliary processes can mimic malignancy, complicating diagnosis.
• Ultrasound serves as a valuable first-line non-invasive imaging tool.
• MRI/MRCP provides higher specificity for identifying pathology and differentiating from malignancy.
• Direct cholangiography with tissue sampling remains the gold standard for definitive diagnosis.

Conclusions:

• Accurate diagnosis of benign biliary pathologies relies on a comprehensive understanding of their imaging appearance.
• Advanced imaging techniques like MRI/MRCP are crucial for differentiating benign from malignant conditions.
• Integrating imaging findings with clinical context is essential for effective patient management.