College of American Pathologists
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2009 — September Case of the Month

Updated August 20, 2009


CAP Foundation September 2009 Online Case of the Month

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A 53-year-old woman was involved in a motor vehicle accident. Upon evaluation at the emergency room, a computed tomography (CT) of the abdomen revealed a 7.0 cm mass in the lower pole of the right kidney. The patient had a right nephrectomy. A well-circumscribed tumor measuring 8.0 x 7.0 x 6.5 cm was confined within the kidney extending from the renal cortex to the renal medulla sparing the renal vein. The solid cut surface was grey-white with multiple small hemorrhagic foci.

The master list with the correct answer

  • Angiomyolipoma
  • Collecting duct carcinoma
  • Juxtaglomerular cell tumor
  • Metanephric adenoma
  • Mucinous tubular and spindle cell carcinoma of
     kidney (MTSCC)

  • Renal cell carcinoma with sarcomatoid

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  • Appropriate diagnosis
  • Critique
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