Brief Article
Copyright ©2011 Baishideng Publishing Group Co.
World J Gastrointest Endosc. Oct 16, 2011; 3(10): 195-200
Published online Oct 16, 2011. doi: 10.4253/wjge.v3.i10.195
Table 4 Indications for colonoscopy and diagnostic yield according to the American Society for Gastrointestinal Endoscopy guidelines n (%)
ASGE IndicationFrequencyRelevant lesions (%)P
Appropriate indication337 (82.6)24.3
Follow-up of colonic polyps79 (19.4)21.50.879
Excision of colonic polyp71 (17.4)42.3< 0.0001
Screening for colonic neoplasia52 (12.7)7.70.010
Hematochezia36 (8.8)30.60.197
Follow-up for colorectal cancer31 (7.6)9.70.166
Diarrhea30 (7.4)16.70.647
Iron deficiency anemia20 (4.9)5.00.090
Follow-up for inflammatory bowel disease12 (2.9)100< 0.0001
Evaluation of an imaging study abnormality that is likely to be clinically significant10 (2.5)0.00.129
Presence of fecal occult blood9 (2.2)44.40.098
Evaluation for synchronous cancer or neoplastic polyps4 (1.0)1000.002
Uncertain indication10 (2.4)20.0
Anemia not otherwise characterized10 (2.4)20.01.000
Inappropriate indication61 (15.0)3.3
Abdominal pain50 (12.3)6.00.005
Chronic constipation18 (4.4)5.50.006
Unexplained weight loss6 (1.5)0.0< 0.0001
Others14 (3.4)0.0< 0.0001