Yee Judy, Sadda Srikant, Aslam Rizwan, Yeh Benjamin
San Francisco Veterans Affairs Medical Center, University of California, San Francisco, 4150 Clement Street, San Francisco, CA 94121, USA.
Gastrointest Endosc Clin N Am. 2010 Apr;20(2):305-22. doi: 10.1016/j.giec.2010.02.013.
Computed tomographic colonography (CTC) is a validated tool for the evaluation of the colon for polyps and cancer. The technique employed for CTC includes a low-dose CT scan of the abdomen and pelvis that is typically performed without the administration of intravenous contrast. Using this technique it is possible to discover findings outside of the colon. By far, most extracolonic findings are determined to be clinically inconsequential on CTC and most patients are not recommended for further testing. However, some findings may result in additional diagnostic evaluation or intervention, which can lead to patient anxiety and increased morbidity and health care costs. Alternatively, some findings can lead to the earlier diagnosis of a clinically significant lesion, which could result in decreased patient morbidity and mortality as well as overall savings in downstream health care costs. The controversies of detecting and evaluating these incidental extracolonic findings on CTC are discussed.
计算机断层结肠成像（CTC）是一种经过验证的用于评估结肠息肉和癌症的工具。CTC所采用的技术包括对腹部和骨盆进行低剂量CT扫描，通常在不注射静脉造影剂的情况下进行。使用这种技术有可能发现结肠以外的病变。到目前为止，大多数结肠外病变在CTC上被判定为临床意义不大，大多数患者不建议进行进一步检查。然而，一些病变可能需要进一步的诊断评估或干预，这可能导致患者焦虑以及发病率和医疗保健成本增加。或者，一些病变可导致临床上重要病变的早期诊断，这可能会降低患者的发病率和死亡率，并节省下游医疗保健成本。本文讨论了在CTC上检测和评估这些偶然发现的结肠外病变的争议。
