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FIGURE 1. A 14-y-old boy with thoracic high-grade chondroblastic osteosarcoma. (A) Radiograph shows osteolytic destruction of seventh rib. (B) MR image shows inhomogeneous uptake of gadolinium–diethylenetriaminepentaacetic acid within primary lesion and highly vascularized tumor satellite adjacent to diaphragm. (C) PET image before neoadjuvant chemotherapy shows inhomogeneous FDG uptake in primary lesion (T/B, 10.3) and homogeneous hypermetabolism of satellite (T/B, 11.7).
