College of American Pathologists

2012 — July Case of the Month

Posted July 10, 2012


CAP Foundation Online Case of the Month

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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

Access Case Critique to view:

  • Appropriate diagnosis
  • Critique
  • References

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