The acute and long-term effect of balloon sphincteroplasty on papillary structure in pigs

Small sphincterotomy combined with papillary dilation with large balloon permits retrieval of large stones without mechanical lithotripsy

“…Balloon dilation alone causes an acute transmural inflammatory response and intramucosal hemorrhage as described in a previous study [17] 7] ] . A small ES frees access mall ES frees access s access to the common cannel common cannel.…”

“…Baron et al [1��] 1��] ] and Vlavianos et al [19] reported that EPD was associated with an unacceptable rate of pancreatitis, and subse�uent studies reported that the incidence of acute pancreatitis was 5%�7% [13,17] . �sing combined therapy, we experienced only one patient who developed pancreatitis (1%).…”

Percutaneous Transhepatic Removal of Bile Duct Stones: Results of 261 Patients

“…Clinical and experimental studies showed that balloon sphincteroplasty were not associated with stricture and dysfunction of the sphincter in long term [28,29]. We routinely performed balloon dilatation of the sphincter of Oddi in all cases, and ranged from 8 to 20 mm.…”

Selective sphincteroplasty of the papilla in cases at risk due to atypical anatomy

“…Studies have shown that the pressure in the common bile duct, the basal pressure of the sphincter of Oddi, the peak pressure and the contractile frequency are significantly reduced one week after dilatation of the papilla [19,27,28] . Two studies of the histology of the papilla after dilatation, one performed in pigs [29] and the other in humans [30] , demonstrated no disruption of the smooth muscle or distortion of the architecture, although inflammation and mild or moderate fibrosis was observed in the majority of cases.…”