A analysis of polyps canceration in 53 patients with polyps of large intestine

548 cases with 815 large intestinal polyps were analysed. The results were as follow: Polyps canceration was found in 53 cases (9.7%). Among which the canceration rate was significantly higher in vinous and mixed polyps than in tubular polyps (P<0.01), and no differentiation was found between former two types of polyps (P>0.05). There was canceration with inflamed polyps. The canceration rate of polyps with larger than 2cm in diameter was higher than those with smaller than 2cm in diameter (P<0.0l). The canceration rate of the polyps with wide fundus were higher than those with pedide (P<0.05). The colour of surface with the canceration polyps was changen. No canceration of polyps was found in children. The canceration rate of polyps in the middle-aged was higher than in the young (P<0.05), and was as same as in the old (P>O.05). The canceration rate of polyps in different segment of large intestine was similiar (P>0.05). Endoscopy and biopsy advanced markedly the diagnostic rate of polyps and their canceration. Endoscopic treatment may decrease the canceration of polys.