沂蒙山区，指山东省的沂山、蒙山一带地区。

Yimeng Mountain Area refers to the region of the Yi and meng Mountains in Shantung Province.

方法回顾性总结分析沂蒙山区4所市直医院24年间收治的先天性胆管囊肿54例。

Methods A retrospective summary analysis was made on 54 cases of congenital choledochocyst received and treated in 4 municipal affiliated hospitals in 24 years.

目的探讨沂蒙山区吸入性变应原的种类与儿童过敏性哮喘的关系，针对性的进行防治，使哮喘的发病率降低到最低范围。

Objective to explore the correlation between aspiration allergens and child allergic asthma in Yimeng Mountain area so as to get effective prevention and treatment of this disease.