This visual detection procedure catches about half of all colon cancer. It picks up most of the cancer not detected by the less-invasive sigmoidoscopy. As a result, a significant number of those who should have this more-thorough inspection don't go for it. But the technique has been perfected to eliminate patient discomfort. Vital signs are monitored via a finger clip.
Some patients actually fall sleep during the process.
Numerous Web site patient testimonials confirm that while the procedure can occasionally produce mild cramping and discomfort, pain is rare. When the doctor finds a small polyp with the colonoscope, he can immediately remove it for biopsy. Larger polyps may have a section removed for analysis and be taken out during a subsequent minimally invasive surgery. But it is not covered by all health plans and HMOs. Ford suggests that some abuses in recommending the procedure when it was not necessary may have contributed to a healthcare provider backlash.