摘要
目的探讨CT检查在直肠癌术前诊断中的临床应用价值。方法回顾性分析经手术病理证实的67例直肠癌患者的CT表现,其中男38例,女29例,与术后病理结果进行对照,分析CT分期和病理分期中的各项准确性指标,评价CT检查的临床价值。结果直肠充气CT扫描对67例直肠癌患者的诊断准确率为100%;诊断直肠癌侵犯浆膜外脂肪的阳性预测值、阴性预测值、敏感度、特异度、假阳性、假阴性分别为94.6%、72.7%、94.6%、72.7%、27.3%、5.4%;诊断盆腔区域淋巴结转移的阳性预测值、阴性预测值、敏感度、特异度、假阳性、假阴性分别为74.2%、69.4%、67.6%、75.8%、24.2%、32.4%;CT分期和病理分期Ⅰ-Ⅲ期的符合率分别为75.0%、68.8%、74.2%,总符合率为71.6%。结论CT检查能准确的检出直肠癌,并能准确的显示浆膜外脂肪的侵犯,但直肠癌的CT分期和对淋巴结转移的判定仍有限制。
Objective To explore the clinical value of CT scanning in the preoperative diagnosis of rectal carcinoma. Methods CT data of 67 cases （male： n=39, female：n=28） of surgical pathologically verified rectal carcinoma were retrospectively reviewed to calculate the accuracy indexes in tumor detection and staging, and evaluating the clinical value of rectum-aerated CT scanning. Results The diagnosing accuracy of the rectal carcinoma by rectum-aerated CT scanning is 100%. The Positive predictive value, negative predictive value, sensitivity, specificity, false positive and false negative of diagnosing the fat invasion outside the plasma membrane by CT scanning is 94.6%, 72. 7%, 94.6%, 72.7%, 27.3% and 5.4%, respectively. The positive predictive value, negative predictive value, sensitivity, specificity, false positive and false negative of diagnosing lymph nodes metastasis in cavitas pelvis by CT scanning is 74.2%, 69.4%, 67.6%, 75.8%, 24.2% and 32.4%, respectively. The coincidence between CT and pathology staging is 75.0%, 68.8% and 74.2% from stage Ⅰ to Ⅱ , respectively, and the whole coincidence is 71.6%. Conclusion CT scanning is useful to detecting rectal carcinoma and demonstrating the fat invasion outside the plasma membrane,but recfal carcinoma staging by CT scanning and evaluating lymph nodes metastasis still have some limitation.
出处
《中国医学影像技术》
CSCD
北大核心
2008年第10期1615-1618,共4页
Chinese Journal of Medical Imaging Technology
