5. Conclusion
We proposed a novel classification system of adenoids based on appearance, and divided into three types: edematous type, common type, and fibrous type. The results showed that AR was the risk factor for the development of AH. Among the children with AR, adenoids are mostly edematous type. Additionally, we found that leukotriene receptor antagonist was an important drug for the treatment of AH. The glucocorticoid was only useful in the edematous type. Therefore, for AH patients with AR, patients with edematous type adenoids and/or patients with increased eosinophils in blood routine choose nasal glucocorticoid combined with leukotriene receptor antagonist is appropriate. On the contrary, leukotriene receptor antagonists alone can be selected to treat AH.