一、病例介绍患者应××,女,8个月,永康芝英人。入院日期72年6月12号。住院号581。患婴为第四胎,足月顺产,产后一直母乳喂养。三个月后发现胃口不好,吮奶量减少,且常出现吐奶,大便拉稀,但无明显发热,后逐渐消瘦,拟为“消化不良”未加治疗。近三天来反复呕吐,腹胀伴血便,乃去当地卫生所就诊,发现右上腹有一拳头大肿块,拟"肠套 I. Case Introduction Patients should be × ×, female, 8 months, Yongkang Zhiying. The admission date was June 12, 72. Hospital number 581. The infant is the fourth child, full-term childbirth, breastfeeding after delivery. After three months, I discovered that my appetite was not good, and her milk volume was reduced. She often had spitting, and her stools were diarrhea. However, she had no obvious fever, and she gradually became thin and was not treated. Repeated vomiting in the past three days, abdominal distension with bloody stools, went to the local health clinic and found that there was a big bump in the right upper abdomen.