New study found that a common type of lesion in the colon represents stronger threat of cancer than the more frequently diagnosed colorectal polyps. During the research, colonoscopy data from patients were used and experts found that often undetected flat lesions could be ten times more risky for colon cancer than the polyp – shaped neoplasms which are usually the target of colonoscopies. This finding can make doctors to try harder to detect and remove flat lesions called non-polypoid colorectal neoplasms (NP-CRNs).

Researchers said that current point of attack on colon cancer is to detect polyps and remove them. Statistic showed that out of 1800 cases of patients who underwent colonoscopies 9% had NP – CRNs and they were more cancerous than polyp- shaped lesions. Conclusion of the research is that NP – CRNs were 10 times more likely to contain cancerous tissue than polypoid lesions, no matter to the size.

More research needs to be done in order to evaluate whether the diagnosis and removal of NP-CRNs has any effect on the prevention of colorectal cancer.