Current status of endoscopic retrograde cholangiopancreatography in patients with surgically altered anatomy

Figure 1 Billroth II gastrectomy and variations of reconstruction. A: Antiperistaltic type. The entry of the afferent limb is located near the lesser curvature; B: Isoperistaltic type. The entry site is located near the greater curvature; C: Retrocolic reconstruction. The afferent limb is shorter than that in antecolic reconstruction; D: Antecolic reconstruction. The afferent limb is significantly longer than that in retrocolic reconstruction; E: Roux-en-Y reconstruction involves the longest limb among all Billroth II gastrectomy techniques; F: Braun jejunojejunostomy anastomosis creates a confusing endoscopic view to reach the afferent limb.