Objective Explore the result of modified DAL-HX83/90 protocol in childhood Langerhans cell histiocytosis (LCH) in order to improve the treatment result of LCH patients.

• 目的为提高儿童郎格罕细胞组织细胞增生症(LCH)的预后,在复习文献基础上对DAL-HX83/90方案进行改良并观察其初步疗效。