方法：无蒂息肉采取逐渐切除的方法，有蒂息肉则横断切除蒂的方法。
Methods: Sessile polyps were removed piecemeal and pedunculated polyps transected at stalk.
结肠镜检查，在下边可见一个无蒂的息肉。
目的探讨安全有效地在内镜下摘除结、直肠扁平无蒂大息肉。
Objective to resect colorectal flat sessile polyps by endoscopic polypectomy safely and effectively.
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