Close
There is a well-defined, slightly expansile, osteolytic lesion seen involving proximal right tibia. The lesion is surrounded by a thin sclerotic rim and displaying thin incomplete septa-like structures.
Lateral radiograph shows scalloping of the posterior margin of tibia (smaller arrows in the annotated image) and radiating trabeculae (larger arrow in the annotated image) mimicking a malignant or infectious periosteal reaction.
In a known case of haemophilia and considering the age of the patient, imaging features are most likely suggestive of an intraosseous haemophilic pseudotumour.