College of American Pathologists

2012 — March Case of the Month

Posted March 8, 2012


CAP Foundation March Online Case of the Month

Click Slide Image to View Case with DigitalScope

A 69-year-old woman presented with a large anterior mediastinal mass. Grossly, the mass was 1150 g, 16.5 x 15.0 x 10.0 cm. Sectioning revealed a well-circumscribed, encapsulated tumor with tan-pink to grey, focally nodular, hemorrhagic, cystic, and necrotic cut surfaces, which was adherent to, but did not invade the left lung parenchyma.

The master list with the correct answer

  • Schwannoma
  • Solitary fibrous tumor
  • Spindle cell thymoma (WHO type A)
  • Synovial sarcoma
  • Thymic carcinoid, spindle cell variant
  • Thymic carcinoma

Access Case Critique to view:

  • Appropriate diagnosis
  • Critique
  • References

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