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Table 2 Type of endoscope, n (%)

From: Risk factors for adverse events associated with endoscopic retrograde cholangiopancreatography in patients with surgically altered anatomy: a retrospective study

  Gastroscope Duodenoscope Standard colonoscope Long colonoscope Short-type single-balloon enteroscope Total
Billroth-I gastrectomy 0 8 (100) 0 0 0 8
Billroth-II gastrectomy 52 (62.7) 23 (27.8) 6 (7.2) 1 (1.2) 1 (1.2) 83
Roux-en-Y gastrectomy 0 0 2 (50) 0 2 (50) 4
Hepaticojejunostomy with Roux-en-Y 2 (28.6) 0 0 0 5 (71.4) 7
Pancreaticoduodenectomy 3 (15.8) 0 4 (21.1) 7 (36.8) 5 (26.3) 19
Total 57 (47.1) 31 (25.6) 12 (9.9) 8 (6.6) 13 (10.7) 121