螺旋CT对过敏性紫癜腹型的诊断价值

The value of spiral CT in diagnosis of abdominal type of allergic purpura

目的:探讨过敏性紫癜腹型患者螺旋CT影像学特点,从而进一步探讨、研究其在影像学中的诊断及鉴别诊断。方法:回顾性分析13例经临床确诊的过敏性紫癜腹型患者的腹部螺旋CT图像,研究其肠壁增厚的部位、范围、程度及受累肠腔的改变,肠管周围的改变。结果:在过敏性紫癜腹型患者腹部CT检查中,12例出现肠壁增厚、水肿、强化,肠管扩张、积液等征象,增强扫描肠壁呈"双环"征表现(12/13,92.3%),其中2例累及十二指肠(2/12,16.7%)、1例累及胃(1/12,8.3%)、11例累及空回肠(11/12,91.7%)、1例累及乙状结肠及直肠(1/12,8.3%)。结论:螺旋CT,尤其是螺旋CT增强检查,对过敏性紫癜腹型的诊断及鉴别诊断有较高的价值。

Objective：To study the characteristics of abdominal spiral CT imaging in patients with abdominal type of allergic purpura,and to further study the diagnosis and differential diagnosis of this disease.Methods：The abdominal spiral CT imaging of 13 patients who were diagnosed as abdominal type of allergic purpura were retrospectively analyzed.From the imaging,the location,extent and degree of thickened intestinal wall,the changes of the affected intestinal lumen,and the changes around the intestine were observed.Results：In the 13 cases of abdominal type of allergic purpura 12 cases showed thickening,edema and enhancement of intestinal wall,dilatation and effusion of intestinal canal,and double-loop sign of intestine wall on enhanced images（12/13,92.3%）.In these cases,the duodenum was involved in 2 cass（2/12,16.7%）,the stomach was involved in one case（1/12,8.3%）,jejunum or ileum were involved in 11 cases（11/12,91.7%）,and sigmoid colon and rectum was involved in one case（1/12,8.3%）.Conclusion：The spiral CT,especially enhanced spiral CT examination played a significant role and possessed high value in the diagnosis and differential diagnosis of the abdominal type of allergic purpura.