College of American Pathologists

2010 — July Case of the Month

Posted August 30, 2010


CAP Foundation July 2010 Online Case of the Month

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A 57-year-old man presented with a history of low back pain for the past 6 months. Imaging revealed cauda equina mass. A single fragment of red-tan soft tissue measuring 3.7 x 2.1 x 1.0 cm was received. Serial sectioning revealed a pink-tan surface with two areas of hemorrhage.

The master list with the correct answer

  • Cellular ependymoma
  • Meningioma
  • Metastatic carcinoma
  • Metastatic melanoma
  • Myxopapillary ependymoma
  • Paraganglioma of the cauda equina

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  • Appropriate diagnosis
  • Critique
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