阑尾腔内气体MDCT征象诊断阑尾炎的价值

Diagnostic Value of Intraluminal Appendiceal air Sign in Appendicitis with Multidetector CT

目的探讨阑尾腔内气体多排螺旋CT(MDCT)征象的分型,以及不同类型征象鉴别诊断阑尾炎和非阑尾炎的价值。资料与方法回顾性分析经手术和临床随访证实的76例阑尾炎和59例非阑尾炎患者的MDCT影像表现,将其中45例阑尾腔内气体征象分为局限气体、连续气体、不连续气体3种类型,统计学分析不同类型的阑尾腔内气体征象鉴别诊断阑尾炎是否具有显著差异性。结果阑尾腔内局限气体征象诊断阑尾炎的特异性不高(P>0.05)。但阑尾腔内连续气体征象在非阑尾炎组出现的概率明显高于阑尾炎组(P<0.05),阑尾腔内不连续气体征象在阑尾炎组出现的概率明显高于非阑尾炎组(P<0.05)。结论不同类型的阑尾腔内气体征象对鉴别诊断阑尾炎和非阑尾炎有较高的价值。

Objective To investigate the sub-type of intraluminal appendiceal air sign,as well as the value of different type signs in differential diagnosis of appendicitis and non-appendicitis.Materials and Methods The MDCT data of 76 cases of appendicitis patients and 59 cases of non-appendicitis patients who confirmed by surgery and clinical follow-up were analyzed retrospectively.The intraluminal appendiceal air signs in 45 cases were divided into three types,confined air sign,continuous air sign,discontinuous air sign.The differential diagnostic values of each type was analyzed statistically.Resu-lts The confined air sign had no significant difference in differential diagnosis between appendicitis and non-appendicitis（P〉0.05）.Continuous air sign was more specific sign for non-appendicitis group（P〈0.05）,and discontinuous air sign was more specific sign for appendicitis group（P〈0.05）.Conclusion Different types of intraluminal appendiceal air signs were helpful to differential diagnosis between appendicitis and non-appendicitis.