PRESENT STATUS AND PERSPECTIVES OF SUBMUCOSAL DISSECTING METHOD OF ENDOSCOPIC MUCOSAL RESECTION IN THE COLORECTUM IN JAPAN

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Abstract

ABSTRACT

Endoscopic mucosal resection (EMR) is one of the endoscopic procedures for treatment of intramucosal cancer of the gastrointestinal tract. This method enables complete resection of a lesion, however, the size of lesions which can be resected en bloc has a limit. For lesions which can not be resected en bloc, endoscopic piecemeal mucosal resection (EPMR) are employed. However, it is often difficult to determine cancer invasion at holizontal and vertical cut end on pathological examination of resected specimens. Therefore, for the purpose of en bloc resection submucosal dissecting method of endoscopic mucosal resection (SDEMR) that is a method by which mucosa is dissected using some special devices after circumferential mucosal incision around the lesion was proposed. It enables us to resect large lesions which cannot be removed en bloc by EMR. Therefore, it is possible that this procedure is able to prevent residual cancer. Furthermore, sufficient pathological examination of resected specimens is possible, and it helps to determine a therapeutic plan after resection. It is now widely accepted as one of the endoscopic procedures for treatment of early gastric cancer, however, there have been few reports on its experience in the colorectum. Then, in order to consider the perspectives of SDEMR in the colorectum, the present status of it in Japan in August 2003 was analyzed and reviewed in this paper.

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