女婴,足月顺产。出生体重4050g,查体无异常。生后3天奶后吐奶及粘液,腹不胀,大便正常,疑咽下综合征,予1％苏打水洗胃后仍呕吐,呕吐物为白色奶块及粘液,无胆汁,偶呈喷射状,并渐出现脱水体征,禁食补液治疗,后改为少量多次喂奶,改变体位。呕吐仍不缓解,小儿出现氮质血症,经内科治疗基本纠正。一般情况好,无感染,拍胸片未见异常,呕吐无加重。于生后14天钡餐造影显示幽门管细窄,胃排气延迟,转外科治疗,手术证实为先天性肥厚 Baby girl, full-term birth. Birth weight 4050g, physical examination without exception. 3 days after birth, milk and spit milk and mucus, abdominal distension, normal stool, suspected swallowing syndrome, to 1% soda water still vomit after gastric lavage, vomit is white milk and mucus, no bile, even spray , And gradually appear signs of dehydration, fasting rehydration therapy, changed to a small amount of multiple breastfeeding, change position. Vomiting is still not alleviated, children with azotemia, the basic correction of medical treatment. In general, no infection, no abnormal beat chest X-ray, no increase in vomiting. 14 days after birth, barium meal angiography shows pyloric narrow, delayed gastric exhaust, surgical treatment, surgery confirmed congenital hypertrophy