A middle-aged man was referred to assess the feasibility of endoscopic removal of a 35 mm laterally spreading lesion within the sigmoid colon. The referring endoscopist appreciated a central depression (0–IIc Paris morphology) and raised the concern for submucosal invasive cancer. Using an Olympus 190 series high-definition colonoscope (Olympus, Tokyo, Japan), the lesion was carefully examined under white light and narrow-band imaging (NBI) (figure 1A). The central aspect of the …

中文翻译：

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IIc与否IIc：精细光学评估的问题

一名中年男子被转介评估内窥镜切除乙状结肠内 35 毫米横向扩散病变的可行性。转诊的内镜医师认为中央凹陷（0-IIc 巴黎形态）并提出了对粘膜下浸润性癌的关注。使用 Olympus 190 系列高清结肠镜（Olympus，Tokyo，Japan），在白光和窄带成像（NBI）下仔细检查病变（图 1A）。……的中心方面