摘要
Colorectal laterally spreading tumor (LST) is a flat protuberant lesion originating from the colorectal mucosa, which is mainly charactherized by lateral superficial diffusion, and rarely vertically invades the deep wall of the intestine. LST is closely related to the occurrence and development of colorectal cancer, but its pathological morphology and molecular mechanism are different from those of general adenoma, and it has some particularity. At present, the related research on LST in China has just started, but we find that its incidence is not low. Therefore, the research progress of epidemiology, molecular biology as well as clinical diagnosis and treatment of this disease is reviewed.
