Development of Conventional Osteosarcoma after 13 Years Continuous Disease-free Survival of Periosteal Osteosarcoma / 대한정형외과학회잡지

Periosteal osteosarcoma is a rare variant of osteosarcoma and has represented 1-2% of all osteosarcomas. Most local recurrences or progression to metastatic disease occurred within the first 3 years after presentation and lung metastasis is more common than bony metastasis. We describe a periosteal osteosarcoma of tibia patient who developed conventional osteosarcoma of proximal humerus after 13 years from the completion of treatment.