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A 50-year-old woman presented with abdominal pain for 6 months. CT scan showed a hypervascular liver mass, with no evidence of cirrhosis. Liver lobectomy was performed and showed a 6.0 cm tumor on sectioning. Immunohistochemistry revealed that the tumor cells were Hep-Par +, MOC31 –, PAX-2 –, S100 –, HMB-45 –, chromogranin – and synaptophysin –.
The master list with the correct answer
• Epithelioid angiomyolipoma
• Hepatocellular carcinoma
• Metastatic balloon cell melanoma
• Metastatic clear cell renal cell carcinoma
• Neuroendocrine carcinoma
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