Excessive Use of Screening Colonoscopy

Kenneth Lin

First published 5/9/11 on the American Family Physicians Community Blog

According to guidelines from multiple expert groups, including those of the American College of Gastroenterology and the U.S. Preventive Services Task Force, the appropriate interval between colonoscopies for colorectal cancer screening is 10 years. But a study published last week in the Archives of Internal Medicinefound that nearly 1 in 4 Medicare patients who had a normal screening colonoscopy examination from 2001 to 2003 underwent another colonoscopy within 7 years with no other medical indications. This study confirmed previous reports of endoscopists advising patients to return for repeat colonoscopies at substantially shorter intervals than those recommended in current guidelines.

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