What are the main differentials of the osteoclastoma?
Aneurysmal bone cyst (ABC) and osteosarcoma.
There is a fairly defined heterogeneously enhancing lesion in the proximal meta-diaphysis of the left tibia with predominant hypo-intense signals. The tibialis anterior muscle is displace laterally by the lesion. The lateral cortex overlying the lesion is not clearly demarcated. A heterogeneously hyperintense focus is seen projecting anteriorly, may represent the area of cortical break seen on lateral plain x-ray.