An aggressive tumor in the distal femur

Case Identification

Case ID Number
Position within the bone
Periosteal reaction
Benign or Malignant

Clinical case information

Case presentation

A 27 year old man has 14 month history of knee pain that was minor at first and accompanied by low grade fevers. After several months, warmth and swelling in the knee developed and an xray was taken.

Radiological findings:
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Case Answer
Clinical Case Answer