Screening Tests


Your Doctor’s Skill at Colonoscopy May Reduce Your Later Colon Cancer Risk

If you’re going to go to the trouble of having a colonoscopy, you’d probably prefer that you get as much as you can out of the screening test. A new study this week shows that a doctor’s rate of finding and removing adenomas — these are pre-cancerous growths — is linked to the patient’s lower risk of developing colon cancer later.

For every 1 percent increase in adenoma detection there was a 3 percent decrease a person’s colon cancer risk. 

Colonoscopy is one of the recommended screening tests for colon cancer. Yet doctors have differing rates at how often they find these adenomas. This is the first study in the U.S. to look at the association between finding adenomas and later cancer risk, as part of a national review funded by the National Cancer Institute. It was published in the New England Journal of Medicine.

In the study, researchers at Kaiser Permanente Northern California reviewed more than 300,000 colonoscopies performed by 136 gastroenterologists between 1998 and 2010. Continue reading