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Case of the Week 598




What is the most likely diagnosis?

  • 37 year-old carpenter with a mass in the finger



Conventional Radiographs of the Hand

  1. Sarcoid
  2. Ewing Sarcoma
  3. Epidermal Inclusion Cyst
  4. Rheumatoid Arthritis
  5. Chondroblastoma

Additional Image - Another Conventional Radiograph of the Hand

 

Additional Images

 

Conventional Radiograph of the Hand


Answer:

.


3. Epidermal Inclusion Cyst

.

.

More (Click Discussion Tab)


 

Epidermal Inclusion Cyst

 

General Considerations

  • Associated with trauma, especially penetrating trauma
  • Usually in bones that are superficially located such as fingers, foot and calvarium
  • Implantation of epithelium that form cysts leading to bone erosion
  • Subungual crush-type injuries have been associated with inclusion cysts as has prior surgery

MORE . . .


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