目的 研究老年小肠肿瘤合并肠 套叠患者手术前后多层螺旋CT特征及临床 意义。方法 选取我院2013年10月至2014 年10月间收治的28例老年小肠肿瘤合并 肠套叠患者为研究对象，术前采取16层 螺旋CT扫描进行平扫及增强扫描，分析 病灶动、静脉期图像特征，并对患者术后 及随访的CT表现进行观察。结果 28例患 者小肠肿瘤伴肠套叠患者术前CT诊断准确 率89.29%（25/28）。误诊5例，其中2例 为小肠及升结肠广泛坏死，3例腹内疝。 小肠套叠7例，结肠套叠11例，回盲部套 叠10例。术前24例患者经CT诊断明确病因 为小肠间质瘤及错构瘤，平扫表现为等密 度肿块，增强后显著强化，强化程度与动 脉相近。 结论 多层螺旋CT可准确反映 老年小肠肿瘤合并肠套叠患者手术前后特 征，对手术方式的选择、评估预后具有重 要的指导作用，可在临床推广应用。

Objective The characteristics and clinical significance of multi-slice spiral CT of elderly patients with small bowel tumors complicated with intussusception before and after surgery. Methods 28 elderly patients with small bowel tumors complicated with intussusception who were treated in our hospital between October 2013 and October 2014 were selected as the study object. 16 slice spiral CT scan was adopted before surgery to perform plain scan and enhanced scan. The image features of lesions in arterial and venous phase were analyzed. The postoperative and follow-up CT findings of the patients were observed. Results The accuracy rate of preoperative CT in the diagnosis of 28 patients with small bowel tumors complicated with intussusception was 89.29% (25/28). There were 5 patients misdiagnosed, including 2 patients with extensive necrosis in small intestine and ascending colon and 3 patients with intraperitoneal hernias. There were 7 patients with small intestine intussusception, 11 patients with colonic intussusception, 10 patients with ileocecus intussusception. Before suegry, 24 patients were diagnosed by CT as small bowel stromal tumors and hamartomas. Plain scan showed equal-density masses. After enhancement, they were significantly enhanced and the degree of enhancement was similar to that in arterial phase. Conclusion Multi slice spiral CT can accurately reflect the characteristics of elderly patients with small bowel tumors complicated with intussusception before and after surgery. It is of important guiding significance in selection of the surgical modes and evaluation of prognosis. It worthy of clinical promotion and application.