结肠癌是胃肠道常见的恶性肿瘤之一。
Colon carcinoma is one of the common malignant tumor in gastrointestinal tract.
乙状结肠镜检可能可以检测出27.3%由结肠镜检发现的基底部恶性肿瘤。
FS would have detected 27.3% of the proximal advanced neoplasms detected at TC.
假设结肠镜检和乙状结肠镜检有相同的分享率，为检测额外的乙状结肠镜检遗漏的1例恶性肿瘤，48次结肠镜检需要被进行。
Assuming the same participation rate at TC as at FS, 48 TCs would be necessary to detect 1 additional advanced neoplasm missed by FS.
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