We thought we had it all figured out. After curative resection of colon and rectal cancer, all clinicians know what to do. The National Comprehensive Cancer Network guidelines¹ have been very clear and specific. For stage I, clinicians followup with colonoscopy, and for stages II and III, a combination of physical examination, carcinoembryonic antigen, colonoscopy, and computed tomographic scan of the chest abdomen and pelvis at very specific intervals for a total of 5 years. What can go wrong with such a detailed plan?

中文翻译：

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大肠癌治疗后监测中的少即是多

我们认为我们已经弄清楚了。结肠癌和直肠癌的根治性切除后，所有临床医生都知道该怎么做。国家综合癌症网络指南¹非常明确和具体。对于I期，临床医生将进行结肠镜检查，对于II期和III期，将进行体格检查，癌胚抗原，结肠镜检查以及以非常特定的间隔对胸部腹部和骨盆进行计算机X线断层扫描的组合，总共进行5年。如此详细的计划会出什么问题？