Purpose

The purpose of this study was to examine the relation between computed tomography colonoscopy (CTC) features of colorectal cancer (CRC) and incomplete colonoscopy.

Materials and methods

The subjects of this retrospective study consisted of 108 patients with advanced CRC (57 men, 51 women; age range, 32–87 years; median, 65 years) who underwent CTC. We compared local CTC features between the groups of complete (n = 74) and incomplete colonoscopy (n = 34). We performed a receiver operating characteristic (ROC) analysis to assess a diagnostic performance of CTC features to predict incomplete colonoscopy.

Results

The cross-sectional area of tumor and stenosis of complete colonoscopy group were significantly smaller and larger than those of incomplete colonoscopy group (p = 0.001 and < 0.001). Circumferential tumor extent rate (CER) showed significantly higher in the incomplete colonoscopy group than complete colonoscopy group (p < 0.001). In the ROC analysis, the cross-sectional area of stenosis showed AUC of 0.916, which was the best to predict incomplete colonoscopy.

Conclusion

CTC features including larger cross-sectional area of tumor, smaller cross-sectional area of stenosis and 100% CER were significantly associated with incomplete colonoscopy for the patients with CRC.

中文翻译：

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狭窄性结直肠癌不完全结肠镜检查的因素：CT结肠成像特征。

目的

本研究的目的是检查结直肠癌 (CRC) 的计算机断层扫描结肠镜 (CTC) 特征与不完全结肠镜检查之间的关系。

材料和方法

这项回顾性研究的受试者包括 108 名接受 CTC 的晚期 CRC 患者（57 名男性，51 名女性；年龄范围，32-87 岁；中位数，65 岁）。我们比较了完全 ( n  = 74) 和不完全结肠镜检查 ( n  = 34)组之间的局部 CTC 特征。我们进行了受试者操作特征 (ROC) 分析，以评估 CTC 特征的诊断性能，以预测不完整的结肠镜检查。

结果

完全结肠镜检查组肿瘤和狭窄的横截面积显着小于和大于不完全结肠镜检查组（p  = 0.001和< 0.001）。不完全结肠镜检查组的圆周肿瘤范围率（CER）显着高于完全结肠镜检查组（p  < 0.001）。在 ROC 分析中，狭窄的横截面积显示 AUC 为 0.916，这是预测不完全结肠镜检查的最佳值。

结论

CTC 特征包括较大的肿瘤横截面积、较小的狭窄横截面积和 100% CER 与 CRC 患者的不完全结肠镜检查显着相关。