Methods:Chest radiograph in 87 children with MPP and in 95 with non-MPP between Oct. 2002 to Apr. 2004, was retrospectively analyzed.

• 方法:回顾性分析2002年10月-2004年4月期间住院确诊为支原体肺炎87例及非支原体肺炎95例的首次胸部X线表现。