The nodule indicated by the arrow is likely a skip metastasis. The lesion involves the tibia and the anterolateral compartment but is separated from the posterior compartment by the fascial septum between the tibia and fibula. The pattern of mineralization is that of ossification rather than calcification. The nodule is a satellite. Parosteal osteosarcoma is a remote possibility with this pattern of immature ossification.
Parosteal osteosarcoma is a strong possibility.
The lesion involves the tibia and the anterolateral compartment but is separated from the posterior compartment by the fascial septum between the tibia and fibula. The pattern of mineralization is that of ossification rather than calcification. The nodule is a satellite. Parosteal osteosarcoma is a remote possibility with this pattern of immature ossification. The lesion involves the tibia and the anterolateral compartment but is separated from the posterior compartment by the fascial septum between the tibia and fibula.