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Chondroblastoma pseudotumor (Epiphyseal infarct) - Distal femur - X-ray
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Chondroblastoma pseudotumor (Epiphyseal infarct) - Distal femur - X-ray
  • Case ID: 698
  • Diagnosis: Chondroblastoma pseudotumor (Epiphyseal infarct)
  • Category: Pseudotumors
  • Category Type: Chondroid-forming
  • Category Sub Type: Benign
  • Location: Distal femur
  • Age: 45
  • Sex: F
  • Treatment: Total knee arthroplasty
  • Image ID: 3897
  • Image Type: X-ray

IMAGE DESCRIPTION:
A 45-year-old female had symptoms of pain and swelling in her knee for eight months. She also gave a history of being on steroids for asthma. This AP radiograph of the distal femur shows a lytic lesion on the articular surface of medial femoral condyle that could be miscontrued as a chondroblastoma. Note that there seems to be a sequestration separation line between a small piece of dead bone on the surface and the subadjacent sclerotic inflammatory osteitis, very characteristic of the diagnosis of epiphyseal infarction. This patient was treated by a total knee replacement.

 

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