Fig. 3From: Reconstruction using a frozen autograft for a skull and humeral lesion of synchronous multicentric osteosarcoma after undergoing successful neoadjuvant chemotherapy: a case report and review of the literatureSystemic bone scan and MRI findings before neoadjuvant chemotherapy. a–c Bone scan revealed uptake for the following three location (a); left occipital bone (b), right proximal humerus (c), and left distal femur (d). e The left occipital lesion on axial enhanced MRI, and a white arrow shows the intracortical lesion. f The right proximal humeral lesion on coronal enhanced MRI. g The left distal femoral lesion on coronal enhanced MRIBack to article page