Adenomatous and hyperplastic polyps cannot be reliably distinguished by their appearance through the fiberoptic sigmoidoscopeRobert G. Norfleet, John B. Wyman, Michael E. Ryan|Digestive Diseases and Sciences|1988Cited by 46
The significance of diminutive colonic polyps found at flexible sigmoidoscopyMichael E. Ryan, John B. Wyman, Ross A. Rhodes et al.|Gastrointestinal Endoscopy|1989Cited by 38