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Sinonasal Osteosarcoma

History: 9 year old boy with nasal congestion and epistaxis (bloody nose) Osteosarcoma uncommonly arises in craniofacial bones, but when it does it occurs most often in bones of the jaw and has only very rarely been reported to arise in the nasal cavity or paranasal sinuses as a primary tumor. Most sinonasal osteosarcomas are high grade. … Continue reading →