What scintigraphic sign is present in the right proximal tibia on the above bone scan? Is it specific for chondromyxoid fibroma?
The doughnut sign. It is observed in a plethora of neoplastic or inflammatory bone lesions and does not add much to the differential diagnosis.
What is the optimal treatment for these tumours?
If, possible, en-bloc excision, as mere curettage is associated with a recurrence rate of 25%.
Bone scan demonstrates thin peripheral increased activity. It is an isolated abnormality.