Abstract
Introduction Colorectal cancer holds a high morbidity and mortality rate. As a common method for colorectal cancer detection, colonoscopy has difficulty in passing through the malignant stenosis in patients who undergo obstructive colorectal cancer, which results in incomplete detection. The missed synchronous lesions increase the risk of metachronous cancer. Therefore, detecting proximal synchronous lesions in patients with obstructive colorectal cancer should be appreciated before operation. Area covered This review evaluates related literature, aiming at providing clinicians with more ideas and attention for detecting proximal synchronous lesions in patients with obstructive colorectal cancer. Expert opinion In patients with obstructive colorectal cancer, missed diagnosis of lesions proximal to the obstruction may lead to metachronous colorectal cancer. For stenosis which is difficult for preoperative colonoscopy to pass by, other methods that can evaluate proximal colon segment are critical. This article introduced several measures preoperatively, intraoperatively and postoperatively. The choice of methods should base on patients’ conditions, aiming at the highest diagnostic yield and lowest risk. Early detection and resection of synchronous lesions in the proximal section of malignant obstruction are expected to minimize the risk of metachronous colorectal cancer and even effect follow-up treatment strategy, which deserves the attention of clinicians.
Published Version
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