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CAP Home > Case of the Month > December 2009 - Left thigh
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2009 — December Case of the Month

Updated November 24, 2009

CLINICAL SUMMARY: LEFT THIGH  

CAP Foundation December 2009 Online Case of the Month

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An otherwise healthy 57-year-old woman presented with a painless, palpable, firm, slightly movable mass on the medial aspect of the left thigh. Magnetic resonance imaging revealed a well-defined tumor with low signal intensity relative to the surrounding skeletal muscle on T1-weighted images and hyperintense signal relative to muscle on T2-weighted images. Received was a 8.0 x 6.8 x 4.4 cm portion of skeletal muscle containing a well-circumscribed 4.7 x 3.8 x 2.5 cm tumor with a uniform yellow-white cut surface.

The master list with the correct answer

  • Extraskeletal myxoid chondrosarcoma
  • Intramuscular myxoma
  • Low-grade fibromyxoid sarcoma
  • Myxofibrosarcoma
  • Myxoid liposarcoma
  • Nerve sheath myxoma

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  • Appropriate diagnosis
  • Critique
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