我院 1994～ 1999年收治小儿特发性肺含铁血黄素沉着症 (ＩＰＨ) 70例 ,其中 4 0例在外院误诊 ,误诊率5 7% ,现报告如下。1　临床资料1 1　一般资料　本组男女各 2 0例 ;年龄 7个月～1 3 91 2岁 ,其中 5岁 2 7例 (70 % ) ;病程 1天～ 4年。1 2　临床表现　咳嗽 31例 ,咯血 14 70 cases of idiopathic pulmonary hemosiderosis (IPH) were admitted to our hospital from 1994 to 1999, of which 40 cases were misdiagnosed outside the hospital, misdiagnosis rate was 57%, are as follows. 1 Clinical data 1 1 General Information The group of 20 males and 20 females; aged 7 months to 1391 years of age, of which 27 cases aged 5 (70%); duration of 1 day to 4 years. Clinical manifestations of cough in 31 cases, hemoptysis 14