Liver masses: a clinical, radiologic, and pathologic perspective.

Area of Science:

• Hepatology
• Radiology
• Pathology

Background:

• Liver masses are common clinical findings, often detected via advanced imaging techniques.
• Accurate diagnosis of liver lesions is critical to differentiate benign from malignant conditions, preventing misdiagnosis and ensuring timely treatment.
• Noninvasive methods, including clinical evaluation and imaging, can characterize most liver masses.

Purpose of the Study:

• To emphasize the importance of accurate liver mass characterization.
• To highlight the role of multiphasic contrast imaging and understanding liver perfusion.
• To outline the diagnostic and management pathways for liver masses.

Main Methods:

• Clinical history and physical examination interpretation.
• Judicious use of laboratory and imaging studies, particularly cross-sectional imaging with multiphasic contrast enhancement.
• Liver biopsy with histologic and immunohistochemical analysis when noninvasive characterization is indeterminate.

Main Results:

• The majority of liver masses can be characterized noninvasively through expert interpretation of imaging and clinical data.
• Understanding liver's unique vascular perfusion patterns is key for accurate imaging-based diagnosis.
• Liver biopsy remains essential for definitive diagnosis in indeterminate cases.

Conclusions:

• Accurate diagnosis of liver masses guides appropriate management, ranging from observation for benign lesions to oncologic therapy for malignancies.
• Management decisions for malignant liver masses consider tumor staging, liver function, and surgical feasibility.
• Effective liver mass management necessitates a multidisciplinary approach involving gastroenterologists, radiologists, pathologists, surgeons, and oncologists.