[Biliary cystadenoma with mesenchymal stroma]

Area of Science:

• Hepatology
• Gynecologic Pathology
• Surgical Pathology

Background:

• Hepatic adenoma polycysticum is a rare liver tumor.
• Understanding its origin and characteristics is crucial for diagnosis and treatment.
• Literature review combined with a case study provides novel insights.

Observation:

• A 34-year-old female presented with hepatic adenoma polycysticum.
• Morphological analysis included histological and immunohistochemical examinations.
• The cystic wall featured cylindrical epithelium and underlying tissue.

Findings:

• Cystic epithelium showed positive reactions for cytokeratins 7, 18, 19, 20, and CA 19-9.
• Underlying tissue exhibited vimentin, estrogen, and progesterone positivity.
• Immunohistochemical profile suggests a resemblance to ovarian tissue.

Implications:

• The findings suggest a possible ovarian origin or differentiation in hepatic adenoma polycysticum.
• This case expands the understanding of liver tumor heterogeneity.
• Further research is warranted to explore the relationship between liver and ovarian tissues in such pathologies.