1 Department of Radiology, University of Wisconsin School of Medicine and Public Health, E3/311 Clinical Science Center, 600 Highland Ave, Madison, WI 53792-3252.
AJR Am J Roentgenol. 2017 Jul;209(1):94-102. doi: 10.2214/AJR.17.17864. Epub 2017 Mar 23.
Extracolonic findings at screening CT colonography (CTC) represent imaging findings incidentally detected outside the colon and rectum. Confusion regarding rates reported in the literature fuels controversy over the relative benefits versus harms of extracolonic findings.
From an evidence-based approach, this article reviews the prevalence and benefits of and challenges raised by extracolonic findings, as well as opportunities to further leverage the effect of screening CTC. The role of the radiologist in handling these lesions responsibly is emphasized.
筛查 CT 结肠成像（CTC）的结外表现是指在结肠和直肠以外偶然发现的影像学表现。文献报道的发生率存在混淆，这加剧了对结外表现的相对益处与危害的争议。
本文从循证医学的角度回顾了结外表现的发生率、益处和挑战，以及进一步利用筛查 CTC 效果的机会。强调了放射科医生在负责任地处理这些病变中的作用。
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