横纹肌肉瘤是儿童中常见的软组织肉瘤,占儿童恶性实体瘤的10～15％,或占儿童恶性肿瘤的5～8％。美国15岁以下儿童的年发病率为5.7/百万人。近年来,儿童横纹肌肉瘤,特别是胚胎性横纹肌肉瘤的治疗有了显著进展,治疗效果明显提高。采用手术、放疗和联合化疗的综合治疗方案,该瘤不仅可局部得以控制,并可获治愈。临床分期肿瘤分期对于选择治疗计划和判断予后都是非常重要的。分期方法多式多样。美 Rhabdomyosarcoma is a common soft tissue sarcoma in children, accounting for 10 to 15% of children with solid malignant tumors, or children accounted for 5 to 8% of malignant tumors. The annual incidence of children under the age of 15 in the United States is 5.7 per million. In recent years, the treatment of rhabdomyosarcoma in children, especially embryonal rhabdomyosarcoma has made significant progress, the treatment effect was significantly improved. With a combination of surgery, radiotherapy and combined chemotherapy, the tumor is not only locally controlled but also healed. Clinical staging of the tumor staging for the selection of treatment plans and judgments are very important. Staging methods are diverse and diverse. nice