大肠侧向发育型肿瘤 (LST)是近年来发现的一种新类型大肠肿瘤 ,由于其在病变形态及发生、发展上有一定的特殊性 ,不同于一般的腺瘤 ,因此 ,日本学者将之单独列为一类肿瘤进行研究。LST与大肠癌有关 ,故近年来对其研究增多 ,本文作者就其流行病学、肿瘤分子生物学及诊断治疗等方面的研究进展做一综述 Lateral Staging of Large Intestine (LST) is a new type of colorectal tumor discovered in recent years. Because of its particularity in lesion morphology, occurrence and development, it is different from the common adenoma. Therefore, Japanese scholars A separate study as a group of tumors. LST is related to colorectal cancer, so more studies have been done on LST in recent years. This article reviews the progress of its research in epidemiology, molecular biology and diagnosis of cancer