Appropriateness of colonoscopy: Diagnostic yield and safety in guidelines

Table 1 ASGE and SIED selection criteria for colonoscopies

ASGE	SIED
Abnormality on barium enema	Abnormality on barium enema, 1Computerized Tomography scan, Magnetic Resonance Imaging, Ultrasonography
Haematochezia–Fecal occult blood test positivity–melena after negative upper GI endoscopy	Haematochezia–Fecal occult blood test positivity-Melena after negative upper GI endoscopy
Unexplained iron deficiency anemia	Unexplained iron deficiency anemia
Surveillance for colonic neoplasia and colonic polyps	Surveillance for colonic neoplasia and colonic polyps
Clinically significant diarrhea of unexplained origin	1Persistent and significant alterations of bowel habits
Surveillance of inflammatory bowel diseases patients	Surveillance of inflammatory bowel diseases patients
Evaluation of inflammatory bowel diseases of colon when colonoscopy will influence immediate management	Evaluation of inflammatory bowel diseases of colon when colonoscopy will influence immediate management
Chronic abdominal pain: once to rule out disease	Chronic abdominal pain: once to rule out disease
	1Unexplained weight loss

¹Different criteria between ASGE and SIED guidelines.