Table 2 List of clinical and imaging features used in the differential diagnosis between osteochondroma and secondary chondrosarcoma
From: The role of magnetic resonance imaging in the evaluation of bone tumours and tumour-like lesions
Benign osteochondroma | Secondary chondrosarcoma |
|---|---|
No pain (only for fracture, bursitis or compression of adjacent structures) | Can cause pain |
No growth beyond skeletal maturity | Rapid growth, suspicious especially if after skeletal maturity |
| Â | Presence of calcifications (signal voids) beyond the stalk |
No associated soft tissue mass | Presence of an associated soft tissue mass |
Thin cartilagineous cap (≤1 cm)* | Thick cartilagineous cap (>1 cm [16]) |