横纹肌肉瘤是一种由分化程度不同的横纹肌母细胞所构成的恶性肿瘤 ,被认为是肌组织发育异常的先天性肿瘤 ,其发病率在儿童时期眶内原发性恶性肿瘤中居于首位 ,恶性程度高 ,发展快 ,如治疗不及时 ,患儿多于 1年内死亡 ,因此 ,及早诊断和治疗在临床上显得尤其重要。本文收集从 1 Rhabdomyosarcoma is a malignant tumor composed of striated muscle cells with different degrees of differentiation. It is considered as a congenital tumor with abnormal muscular dysplasia. The incidence rate of rhabdomyosarcoma is the highest in primary orbital malignant tumors in childhood. The degree of malignancy High, rapid development, such as treatment is not timely, children died within 1 year, therefore, early diagnosis and treatment is clinically important. This article collects from