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| Ew·ing's sar·co·ma [ y ingz saar kṓmə ] or Ew·ing's tu·mor |
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| Definition: |
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bone cancer in children: a highly malignant cancerous tumor that develops in the long bones, pelvis, or ribs, usually in children and adolescents
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| [Early 20th century. After James Ewing (1866-1943), U.S. pathologist] |
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