Follow-up Period after Endoscopic Treatment of Colorectal Tumors Masakatsu Fukuzawa 1,2 , Yutaka Saito 1 , Takahisa Matsuda 1 1Division of Endoscopy, National Cancer Center Hospital, Tokyo 2Gastroenterology and Hepatology, Tokyo Medical University, Tokyo Keyword: EMR/EPMR , ESD , 遺残・再発 pp.1483-1492
Published Date 2007/9/25
DOI https://doi.org/10.11477/mf.1403101195
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 From January 2003 to December 2006, A total of 228 lesions (≧20mm) were treated by EMR or EPMR, and another 145 lesions underwent ESD in our hospital. All cases were followed up for more than six months. Recurrence as invasive cancer was identified in one EPMR patient treated among the 36 cases in which residual tumor or recurrence was detected in the EMR/EPMR group. Residual tumor or recurrence was detected within six months in 83% (30/36) of these cases which suggests that an appropriate time interval for the initial examination after fractional resection is three to six months. In the ESD group, no residual tumor or recurrence was detected in any lesion that was treated by en-bloc resection. This suggests that when an ESD is considered to be a curative resection (adenoma, M-SM1, no vascular infiltration, negative resection margin and poor differentiation at the invasive front), an initial follow-up examination one year after ESD should be adequate. However, if piecemeal resection was performed, follow up examination should be performed not only by colonoscopy but also by CT and Tumor markers.

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