Surveillance of:
• Adenomatous polyps: 13.5 percent
• Colorectal cancer: 2 percent
• Ulcerative colitis: 0.9 percent
• Crohn’s disease: 0.6 percent
• Established Crohn’s disease: 0.2 percent
• Established ulcerative colitis: 0.2 percent
Screening:
• Routine risk only: 21.6 percent
• Family history of colorectal cancer: 12.1 percent
• Family history of polyps: 2.8 percent
Symptoms:
• Bleeding: 29.7 percent
• Irritable bowel syndrome: 18.2 percent
• Hematochezia: 17.9 percent
• Abdominal pain/bloating: 9.1 percent
• Diarrhea: 7.6 percent
• Positive fecal occult blood test: 7.2 percent
• Change in bowel habits: 7.1 percent
• Anemia: 5.7 percent
• Constipation: 5.4 percent
• Weight loss: 1.6 percent
• Melena: 0.7 percent
• Iron deficiency without anemia: 0.3 percent
Follow-up diagnosis of:
• Polyp found in flexible sigmoidoscopy: 1.5 percent
• Abnormal study: 1 percent
• History of non-GI cancer: 0.8 percent
• Suspected IBS: 0.5 percent
• Polyp found in barium enema: 0.2 percent
• Polyp found in previous colonoscopy: 0.2 percent
Other:
• 6.5 percent
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