Objective To analyze and research significance of applying contrast-enhanced CT in diagnosis of colon tumor, and to investigate difference between CT scan and contrast-enhanced CT in diagnosis of colon tumor. Methods A total of 220 patients with suspected colon tumor, as 244 colon tumors by pathological diagnosis, were taken study subjects. They all received preoperative CT scan and contrast-enhanced CT for examination. Postoperative pathology result was taken as diagnosis standard for comparing and analyzing sensitivity and specificity of CT scan and contrast-enhanced CT in diagnosis of colon tumor. Results Contrast-enhanced CT had sensitivity and specificity as 90.16% and 77.27%, and CT scan had those as 72.95% and 38.89%. Contrast-enhanced CT had much higher sensitivity and specificity than CT scan, and their differences all had statistical significance (χ2=24.043, 16.172, P<0.05). Contrast-enhanced CT had higher detection rates of location, morphology, and growth pattern than CT scan, and their differences all had statistical significance (P<0.05). Conclusion In diagnosis of colon tumor patients, implement of contrast-enhanced CT is preferred, for its reducing patients pain, easily operating, and providing reference and preoperative staging for clinicians. This method is worth clinical application.%目的：分析和研究应用增强CT在结肠肿瘤诊断中的意义,探讨CT平扫与增强CT在诊断结肠肿瘤中的差异。方法220例考虑结肠肿瘤的患者作为研究对象,病理证实结肠肿瘤244个,所有患者均于术前采取CT平扫与增强CT检查,以患者术后的病理结果作为诊断标准,对比和分析CT平扫与增强CT在结肠肿瘤诊断中的灵敏度与特异度。结果增强CT检查的灵敏度与特异度分别为90.16%与77.27%, CT平扫检查的灵敏度与特异度分别为72.95%与38.89%,增强CT显著高于CT平扫,差异均有统计学意义(χ2=24.043、16.172, P<0.05)。增强CT的检出率及对肿瘤的位置、肿瘤的形态及肿瘤的生长方式检出率均高于CT平扫检查,差异均具有统计学意义(P<0.05)。结论在对结肠肿瘤患者的诊断中,增强CT检查可放在第一位,不仅减轻患者的痛苦,而且操作简单,并能够为临床医师提供准断依据和术前分期,值得临床应用。
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