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Rare Benign Liver Tumors: Current Insights and Imaging Challenges
Eleonora Salles-Silva1, Paula Lemos de Castro2, Luiza Carvalho Ambrozino2
1Department of Radiology, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil; Department of Radiology, Grupo Fleury, Rio de Janeiro, Brazil.
Seminars in Ultrasound, CT, and MR
|April 11, 2025
Summary
This review details imaging features of rare benign liver tumors, including angiomyolipoma and hemangioma, to aid diagnosis. Recognizing these uncommon hepatic lesions helps differentiate them from malignancies.
Area of Science:
- Radiology
- Hepatology
- Oncology
Background:
- Rare benign liver tumors are frequently discovered incidentally.
- These lesions can mimic malignant tumors, complicating diagnosis.
- Accurate differentiation is crucial for appropriate patient management.
Purpose of the Study:
- To review the imaging characteristics of uncommon benign hepatic lesions.
- To emphasize the role of multiphasic computed tomography (CT) and magnetic resonance imaging (MRI) in diagnosis.
- To improve the distinction between benign liver tumors and malignant neoplasms.
Main Methods:
- Review of imaging features of specific rare benign liver tumors.
- Analysis of multiphasic CT and MRI findings.
- Discussion of clinicopathological correlation for challenging cases.
Main Results:
- Specific imaging presentations for angiomyolipoma, inflammatory pseudotumor, paraganglioma, mesenchymal hamartoma, sclerosed hemangioma, solitary fibrous tumor, and lipoma are highlighted.
- Some tumors have characteristic imaging features, while others require further correlation.
- Imaging can guide the differentiation of these benign entities from malignant liver tumors.
Conclusions:
- Familiarity with the imaging features of rare benign liver tumors is essential for radiologists and clinicians.
- Accurate diagnosis aids in guiding management and avoiding unnecessary interventions.
- Distinguishing these benign lesions from malignancies improves patient outcomes.
