NBME Answers : mahesh's page

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Osteosarcoma histological appearance. Paget disease is one of risk factor

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spow Looking back, I know it's osteosarcoma but the lung metastases made me think of Ewing's +

makinallkindzofgainz Ewing sarcoma is common in boys <15 years old. This patient is a 70 year old woman. The stem notes elevated periosteum and a sunburst pattern which are characteristic of osteosarcoma. +2

llamastep1 Also "sunburst pattern" is a classic description of Osteosarcoma. +1