College of American Pathologists

2010 — December Case of the Month

Posted January 14, 2011


CAP Foundation December 2010 Online Case of the Month

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A 55-year-old woman underwent abdominal ultrasonography for evaluation of possible gallstones. Cholelithiasis could not be demonstrated, but there was a 7.5 cm multiloculated cyst involving the distal pancreas. Subsequent distal pancreatectomy revealed a multiloculated cyst (7.5 x 7.0 x 6.0 cm) filled with cloudy, amber-colored, thin fluid. The cyst wall ranged from 1mm to 3.0 mm in thickness. No communication with the pancreatic ductal system was seen. No papillary excrescences were seen.

The master list with the correct answer

  • Cystic islet cell neoplasm
  • Intraductal papillary mucinous neoplasm
  • Mucinous cystic neoplasm
     (mucinous cystadenoma)

  • Pancreatic pseudocyst
  • Serous cystadenoma
  • Solid pseudopapillary neoplasm of the pancreas

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  • Appropriate diagnosis
  • Critique
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