title: Comments relevant to rigid proctosigmoidoscopy, flexible fiberoptic sigmoidoscopy, and colonoscopy.
mesh_terms: D001466:Barium Sulfate; D003106:Colon; D019723:Endoscopes; D004724:Endoscopy; D004733:Enema; D005336:Fiber Optic Technology; D006801:Humans; D020694:Sigmoidoscopes; D012812:Sigmoidoscopy
chemical_list: D001466:Barium Sulfate