May 22, 2012 Over the past decade or so, sigmoidoscopy has been largely abandoned by doctors in the U.S. in favor of colonoscopy to detect and prevent colon cancer. But sigmoidoscopy is easier on patients and is also effective in finding precancerous polyps.
No anesthesia here: A patient watches his colonoscopy as it happens at Memorial Sloan-Kettering Hospital in New York.
Ted Thai/Time & Life Pictures/Getty Image
March 20, 2012 Anesthesia is being used more often for colonoscopies, even if people really don't need it. People in the Northeast are far more likely to be put to sleep, compared to the West Coast, where insurers are less likely to pay.
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