College of American Pathologists

2012 — February Case of the Month

Posted February 21, 2012


CAP Foundation January Online Case of the Month

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A 7-year-old boy presented with intermittent abdominal pain and was found to have a large right retroperitoneal mass on imaging. He was taken to the operating room, where a gross total resection was achieved. The tumor measured 15.5 x 8.5 x 7.5 cm and weighed 460 g. The cut surface was firm and yellow-tan with no evidence of distinct nodules. Two lymph nodes were also sampled and showed no evidence of metastatic tumor.

The master list with the correct answer

  • Ganglioneuroblastoma, intermixed
  • Ganglioneuroblastoma, nodular
  • Ganglioneuroma
  • Neuroblastoma, differentiating
  • Neuroblastoma, poorly differentiated
  • Neuroblastoma, undifferentiated
  • Neurofibroma
  • Schwannoma

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  • Appropriate diagnosis
  • Critique
  • References

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