A previously healthy 5-year-old boy was brought to the surgery clinic with a 2-day history of intermittent abdominal pain. On palpation of the abdomen there was pain in the periumbilical region, but no rebound or guarding. An ultrasound was normal, and a computed tomography of the abdomen was performed (Panels A,B). Based on the CT findings, what is the most likely etiology of the patient’s symptoms?
一名既往健康的 5 岁男孩因间歇性腹痛 2 天被带到外科门诊。 腹部触诊脐周有痛感，但无反跳痛或肌张力减退。 超声检查正常，并进行了腹部计算机断层扫描（图 A、B）。 根据 CT 检查结果，患者症状最可能的病因是什么？
A. Crohn’s disease
B. Colocolonic intussusception 结肠套叠
C. Colonic pseudo-obstruction 结肠假性梗阻
D. Ileocolic intussusception 回结肠套叠
E. Sigmoid volvulus乙状结肠扭转
答案解析：
正确答案是结肠结肠套叠。 面板 A 和 B 分别显示降结肠中的目标标志和伸缩。 结肠套叠是儿童肠梗阻的罕见原因，大多数病例是回结肠而非结肠结肠。 本例行气动复位后，患者症状消失。
正确答案：B
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