14 years old patient has  lower leg   pain. X-ray Knee is requested

Within the metaphysis, doesn’t extent to the epiphysis

  • •Geographical
  • •X ray: expansile lytic lesion , cortex is thinned out
  • •MR : fluid level
  • •Cause: aneurysmal bone cyst (age, location, appearance)

X-ray shows: Lytic expansile lesion located on the metaphysis(benign). MRI show fluid levels in the lesion


Young patient of 13-year presents with pain and swelling in the Ankle.  X- Ray ankle is advised followed by MRI