Surveillance after Colorectal Polypectomy : Comparison Between Japan and U.S.

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Background: Recently, early detection and early treatment of the colorectal cancer have beenenabled by the improvement of endoscopic diagnosis and introduction of newtechniques. In Japan, although Japan Polyp Study is running, there is no standardstrategy concerning the post-polypectomy colonoscopic surveillance yet.Post-polypectomy colonoscopic surveillance is so far entrusted to each institute or eachgastroenterologist at present.Material and methodTo analyze the present states of the surveillance after polypectomy in Japan, weperformed questionary survey and compared them with the results in U.S. andU.S.Multisociety Task Force on colorectal Cancer. A simple random sample of 132doctors who engaged in a digestive organ disease in plural institutes was obtained.ResultMany doctors recommend surveillance every around 1 year regardless of the kindof the polyp. Doctors in Japan tend to recommend postpolypectomy colonoscopicsurveillance more frequently than that recommended U.S. Multisociety Task Force oncolorectal Cancer. Furthermore in all types of polyps except for 12 mm tubularadenoma with high grade dysplasia, the majority of doctors in Japan recommendpost-polypectomy colonoscopic surveillance more frequently than American doctors.Significant difference was found in surveillance of hyperplastic polyp among doctorswith 1 to 5 years experience and those with more than 6 years.ConclusionIt has been shown that surveillance intervals varies substantially in each doctor.The agreement of the surveillance program in Japan is necessary to standardize thestrategy for the post-polypectomy surveillance of the colon.
神戸大学の論文
2010-00-00

Surveillance after Colorectal Polypectomy : Comparison Between Japan and U.S.

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