1　病例报告男 ,1月龄。因呕吐 2 5d,体重不增 1 0 d于 1 999- 0 4 - 1 5入院。患儿系第 1胎第 1产 ,足月顺产 ,出生体重 3.2 kg,母孕期否认病毒性感冒史及小腿痉挛史。于生后第 5天开始每逢吸乳时均出现咳嗽 ,呕吐奶汁 ,无明显发绀 ,有时呼吸稍促 ,曾在某二级医院诊治 1周 ,考 1 case report male, 1 month old. Due to vomiting 25d, the body weight did not increase 10d at 999- 0 4-1 5 admission. The first fetus in children with first birth, full-term birth, birth weight 3.2 kg, pregnant women denied the history of viral and calf spasm history. On the fifth day after birth, cough and vomit milk appeared on each breast pump, no obvious cyanosis, and sometimes a little breath, had a second-class hospital for 1 week, test