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Case of the Week 532



What is the most likely diagnosis?

  • 21 year-old with lump near knee



Frontal and Lateral Knee Radiographs

  1. Osteoblastoma
  2. Osteochondroma
  3. Osteosarcoma
  4. Chondroblastoma
  5. Giant Cell Tumor

Additional Image-None

 

Additional Images


None


Answer:

 

2. Osteochondroma

 

More (Click Discussion Tab)

 

 

Osteochondroma

General Considerations

  • Osteochondroma is the most common benign bone tumor and the most common skeletal neoplasm
    • They account for approximately 35% of all benign bone tumors and 9% of all bone tumors
  • They are cartilage-capped bony projections from the external surface of a bone
  • They occur only in bones which form by enchondral bone formation and most commonly found around the knee (40%) and shoulder, although they can occur in any bone

    MORE . . .

     


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