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结肠侧向发育型肿瘤(laterally spreading tumor,LST)指源于结肠黏膜的一类平坦隆起型病变,极少侵犯肠壁深层,主要沿黏膜表面呈侧向浅表扩散,故称之为侧向发育型肿瘤亦称匍行性肿瘤~([1])。根据内镜下形态LST一般分为:颗粒型(细分为颗粒均一型和结节混合型)和非颗粒型(细分为扁平隆起型和假凹陷型)。有动态研究表明,LST可发展为大肠癌,故早期治疗显得十分重要~([2])。
Laterally spreading tumor (LST) refers to a type of flat and bulging lesion originating from the colonic mucosa, rarely infiltrating the deep layers of the intestinal wall and spreading laterally along the mucosal surface, so it is called sideways Developmental tumors, also known as creeping tumor ~ ([1]). According to the endoscopic morphology LST generally divided into: particle type (subdivided into uniform particles and nodules mixed type) and non-granular type (subdivided into flat uplift and false depression type). Dynamic research shows that LST can develop into colorectal cancer, so early treatment is very important ~ ([2]).