Giant cell tumour (GCTs) of bone is a usually benign bone tumours which arises from metaphysis and typically extending into the epiphysis of the long bones.
The commonest site representing more than half of cases is around the knee, as in this case.
On plain film the lesion is typical an expansile, lucent lesion without a sclerotic rim, but with cortical thinning and uncommonly periosteal reaction. A pathological fracture is often present at presentation.
This case was referred to an out of country of residence hospital bone centre, for further review and biopsy, the result of which is not currently known.