Endoscopic view of large-balloon dilation without biliary sphincterotomy. A. Guidewire positioned across the papilla. B. Large balloon inflated across the papilla without preceding endoscopic sphincterotomy. C. Markedly dilated papilla after large-balloon dilation. D. Large stone extracted with a basket through the dilated papilla.
Hwang et al. BMC Gastroenterology 2013 13:15 doi:10.1186/1471-230X-13-15