患儿男,5岁。因反复发作性腹痛4年,加重1周入院。4年前患儿出现阵发性脐周及右下腹痛,常伴呕吐,每次持续3～5min,疼痛剧烈,每年发作4～5次,发作期间无发热,无咳喘,无腹泻,大便正常,间歇期活动正常。近1周患儿腹痛呈阵发性加剧,伴呕吐来诊。入院体检:一般状态良好,神志清楚,发育 Children male, 5 years old. Due to recurrent abdominal pain for 4 years, increased 1 week admission. 4 years ago, children with paroxysmal umbilical cord and right lower quadrant abdominal pain, often accompanied by vomiting, each lasting 3 ~ 5min, severe pain, attack 4 to 5 times per year, no fever during the attack, no cough and asthma, no diarrhea, stool Normal, intermittent normal activities. Abdominal pain nearly paroxysmal increased in 1 week, with vomiting. Admission medical examination: generally in good condition, conscious, development