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Ewing肉瘤是累及儿童和青年人骨和软组织的高级别圆细胞肉瘤,以一致的小圆细胞弥漫性增生为特征,鉴别诊断包括各种各样的小圆细胞肿瘤。Ewing肉瘤藏匿有特定的周期性染色体易位,几乎在所有病例中,该易位引起EWS
Ewing’s sarcoma is a high-grade round cell sarcoma involving the bones and soft tissues of children and young adults characterized by diffuse hyperplasia of small round cells. The differential diagnosis includes a variety of small-cell tumors. Ewing’s sarcomas harbor specific periodic chromosomal translocations that in almost all cases cause EWS