21. A sigmoidoscopy costs about $ 200, a colonoscopy $ 1, 200 to $ 1, 500. 22. Some also will pay for a sigmoidoscopy , which examines only the last 2 feet of the colon. 23. People expect sigmoidoscopy to be uncomfortable and find the idea of testing their stools distasteful, he said. 24. Sigmoidoscopies cost about $ 280 on average, compared with about $ 1, 000 for a colonoscopy.25. Participants were given chest X-rays for lung cancer and a flexible sigmoidoscopy exam for colon cancer. 26. His sigmoidoscopy also raised suspicion, leading to a colonoscopy, another follow-up procedure requiring anesthesia. 27. Fewer still had flexible sigmoidoscopy or colonoscopy, both of which are more accurate and are covered by Medicare. 28. Sigmoidoscopies are carried out in a doctor's office without sedation and generally cost less than $ 200.29. Sigmoidoscopy uses a flexible tube inserted through the rectum into the large intestine to detect polyps or cancerous tumors.30. The latest attempt to settle the uncertainty compared colonoscopy to a combination of sigmoidoscopy and the fecal blood test.