College of American Pathologists
Printable Version

2009 — December Case of the Month

Updated November 24, 2009


CAP Foundation December 2009 Online Case of the Month

View case with:
PC users: ImageScope
First-time use of ImageScope?
* Download (required)

Why use ImageScope?

ImageScope offers many additional features including:

• Ability to view multiple slides
  concurrently; synchronize

• Facility to author annotations.

• Capability to run analysis
  algorithms, and display results.

• Modify image brightness,
  contrast, color balance,

• Generally faster and more

MAC/PC Users: WebViewer

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

Access Case Critique to view:

  • Appropriate diagnosis
  • Critique
  • References

Your input is valued - please submit your feedback so that we may continue to optimize this program.