大肠造影CT检查对结直肠肿瘤诊断的价值

CT Examination of Large Intestinal Tract Contrast and Its Diagnositic Value for Colorectal Tumor

目的评价大肠造影CT检查对结直肿瘤诊断的价值。方法采用肛门充氧气大肠造影进行CT检查、X线气钡双重对比造影、内镜等检查,并对有手术和病理证实的40例大肠肿瘤患者进行分析。结果检出最小病灶为0.7cm,术前与术后的临床病理分期符合率达70%,良恶性诊断复合率为87.5%;区域淋巴结转移诊断复合率为85.7%,肝转移诊断复合率为100%。结论①检查方法简便安全,对比度好,较小的肿瘤就能被发现。②病变检出率及临床分期准确率高。③对肠道弥漫占位性疾病通过一次检查即能完成病变分布的诊断。④能清楚地显示因结构复杂,其它肠道检查方法易于漏诊部位(如回盲部)的肠道肿瘤。⑤对大肠肿瘤定位准确。

Objective To evaluate the role of total intestinal contrast examination on intestinal tumor. Methods Total of 40 patients were collected, which were diagnosed clinically with large intestinal tumor. All of the patients received endoscopic examination, airbarium double contrast X-ray examination, total intestinal contrast CT scanning, the later comprised of small bowel imaging with diluted iodine solution, large bowel imaging by filling oxygen through anus and CT scanning. Results The minimal focus in the bowel was 0,7cm. The according rate in preoperative and postoperative staging of colorectal cancer was 70%, 87.5% in diagnosis of benign and malignant tumors, 85.7% in diagnosis of regional lymph node metastasis, and 100% in diagnosis of hepatic metastasis. Conclusion ①the total intestinal contrast CT scanning was a simple, safe and reliable method, its contrast was high and the much smaller tumor could be explored with this method; ②the according rates of displaying and staging were high using this method; ③the diagnosis of disseminating disorders could be completed by one examination; ④this method could scene the early intestinal tumors which were leaked easily by other intestinal exam methods; ⑤this method could rightly locate the tumors originating in the large bowel.