MALAT1 and adenoma: In addition, polyp tissues categorized as pathological report to hyperplastic polyps, adenomas and inflammatory polyp tissues and methylation pattern of promotor MALAT1 compared with tumor group, determination of methylation percentage in each group showed that, 39.1%, 30.8%, 30%, 55% of hyperplastic, adenomas, inflammatory polyp tissues and tumor tissues were methylated, respectively.