Date: 20 Dec 2012

Colon and Rectum Carcinoma Surveillance Counterpoint: Japan

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The primary aim of surveillance after curative resection of colorectal cancer is to detect metastasis, local recurrence, or metachronous primary cancers at an early stage when curative reoperations are possible, leading to improvement of the prognosis. Recent meta-analyses show that more intensive postoperative surveillance results in a reduction of mortality and an improvement in the curative reoperation rate in comparison to minimal surveillance [1-6]. Furthermore, the early detection of recurrence of colorectal cancer also results in prolongation of life by chemotherapy and/or radiotherapy, even in patients with unresectable disease [7]. While several recommendations are now available from the American Society of Clinical Oncology (ASCO), the European Society for Medical Oncology (ESMO) and so on [8,9], the best strategy for the surveillance still remains controversial.