Figure Legend
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Panel A
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Panel B
Figure 14:
Parosteal osteosarcoma of the distal humerus in a 14-year-old boy who presented with an enlarging mass. Lateral radiograph (Panel A) and photograph of the sagittally sectioned gross specimen (Panel B) show a lobulated ossified mass (curved arrows) with a narrow stalk of attachment to the outer osseous surface (arrowheads) and a cleavage plane inferiorly (straight arrow). No nonmineralized areas, which would be suggestive of high-grade foci, are seen, and the medullary canal (* in b) is not involved.
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