A young adult with a massive femoral tumor

Case Identification

Case ID Number
Position within the bone
Benign or Malignant

Clinical case information

Case presentation

This young adult has a massive femoral tumor. No further information is available. However, the appearance is very distinctive and may be diagnostic.

Radiological findings:
A very large, lytic mass occupies the distal 23 centimeters of the left femur in a skeletally mature individual. The lesion appears to have started in the metaphysis. A honeycomb pattern of complex lucent areas and trabeculation is present, along with expansion of the bone, a minimal periosteal reaction, and chronic deformity from progressive small fractures.
Differential Diagnosis
What is the differential?
Case Answer
Clinical Case Answer