重视平坦型大肠肿瘤的临床诊治

平坦型大肠肿瘤包括表浅型大肠肿瘤及凹陷型大肠肿瘤，与大肠癌发生有密切相关的特殊性。表浅型大肠肿瘤以大肠侧向发育型肿瘤(1aterally spreading tumor，LST)为代表；凹陷型大肠肿瘤以凹陷型早期大肠癌(Ⅱc型早期大肠癌)为代表。平坦型大肠肿瘤由于在临床上难以发现，在我国尚未被临床医师普遍认知，因此有关报道极少。近年来，南方医院在做肠镜检查中对平坦型大肠肿瘤的检出和诊疗上创造与积累了一些自己的经验，他们认为，提高大肠平坦型病变征象的识别和染色内镜的应用是发现大肠平坦型病变的关键，黏膜剥离术和分析黏膜剥离术是诊治大肠平坦型病变的最佳方法之一，而且已着手开展对平坦型大肠肿瘤发生发展的基础研究工作。

Pay emphasis to the diagnosis and treatment of flat tumors of colon

Flat colon lesions, which include superficial colon tumor and depressed colon tumor, have close relationship with colon cancers. The main type of flat colon tumor is laterally spreading tumor (LST) while the main type of depressed tumor is depressed early colon cancer (IIc type). Little has been reported about the flat colon tumor because it is difficult to be detected and has not yet been broadly recognized by clinicians. Recently, clinicians with the Nanfang Hospital have innovated some novel colonoscopic approaches to improve the diagnosis and treatment of flat colon tumor and accumalate experiences in this regard. Their conclusions are: 1. Improvement in recognizing the physical characteristics of the lesion and the application of chromoscopic colonoscopy are the key points to reveal and identify the flat colon tumors. 2. The best theraputic methods for flat colon lesions are endoscopic mucosal resection and piecemeal endoscopic mucosal resection.