College of American Pathologists

2013 — February Case of the Month

Posted February 4, 2013


CAP Foundation Online Case of the Month

Click Slide Image to View Case with DigitalScope

A 45-year-old woman presents with a two-month history of vague abdominal discomfort. She underwent a hysterectomy with bilateral salpingo-oophorectomy three years ago. On physical exam, a large non-tender mass was palpable in the mid-abdomen. Imaging studies disclosed a heterogeneous 15.0 cm retroperitoneal soft tissue mass.

The master list with the correct answer

  • Extraskeletal myxoid chondrosarco
  • Leiomyosarcoma
  • Myxofibrosarcoma (Myxoid malignant
     fibrous histiocytoma)

  • Myxoid/round cell liposarcoma
  • Pleomorphic liposarcoma
  • Well-differentiated liposarcoma

Access Case Critique to view:

  • Appropriate diagnosis
  • Critique
  • References

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