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要旨●内視鏡的または外科的に切除した大腸微小病変(最大径5mm以下)の担癌率,SM浸潤率は0-Ip,0-Isp,0-Is,0-IIa型病変2.3%(124/5,444),0.1%(7/5,444),0-IIc,0-IIa+IIc型病変35.1%(13/37),24.3%(9/37)で,隆起型病変において低率であった.CFPを施行した大腸微小病変999病変の内視鏡的完全一括摘除率91.9%(918/999),病理組織学的完全一括摘除率77.8%(777/999)で,そのうち78.4%(783病変)が低異型度腺腫であったが,断端が不明瞭で病理組織学的に一括摘除と判断できない病変を認めた.病理組織学的不完全摘除因子は,粘膜筋板なし,最大径4〜5mm,Jumbo鉗子を用いた鉗子摘除方向非接線方向の3項目で有意差を認めた.
The applicability of CFP(cold forceps polypectomy)was investigated by examining the maximum diameter of 16,882 colorectal endoscopically or surgically resected tumors. The cancer rates and submucosal invasion rates of the tumors were also examined. The cancer and submucosal invasion rates for 0-Ip, 0-Isp, 0-Is, and 0-IIa of 5mm or smaller were low in each 2.3%(124/5,444), 0.1%(7/5,444). The cancer and submucosal invasion rates to 0-IIc and 0-IIa+IIc of 5mm or smaller were high in each 35.1%(13/37), 24.3%(9/37). The rates of en bloc endoscopic resection and pathologies were high in each 77.8%(777/999). The tissues included 783 low-grade adenoma(78.4%)samples. The incomplete pathological factors were without mucosal mucosae, measured 4-5mm in diameter, and the vertical direction of CFP.
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