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contentuptodate· Content· item f27_46_28385

©2013 UpToDate ® Print Email Billroth II gastrectomy Schematic representation of the relationship between the afferent and efferent limbs of the gastrojejunostomy and the ampulla of Vater following Billroth II reconstruction. During endoscopic retrograde cholangiopancreatography, the landmarks of the ampulla are inverted by 180º compared to their location in native anatomy.