病例资料男，１．５岁。腹泻、呕吐、咳嗽３天，Ｘ线胸片示双肺纹理增多及右下肺见小点状阴影，拟诊支气管肺炎、肠炎收入院。病儿为第二胎足月顺产，母乳喂养至周岁，生长发育较同龄儿迟缓，无多饮多食史，其父母及姐姐均健康。查体：体温３７．８℃，脉搏１３７／ｍｉｎ... Case information Male, 1.5 years old. Diarrhea, vomiting, cough for 3 days, chest X-ray showed increased lung pattern and the right lower lung see little shadow, suspected bronchial pneumonia, enteritis income hospital. The sick child is full-term second-term fetus, breastfeeding to the age of older than the same age, growth and development retardation, no more diet history, the parents and elder sister are healthy. Physical examination: body temperature 37.8 ℃, pulse 137 / min ...