Endoscopic retrograde direct cholangioscopy extracting stones from common bile duct in a case of ectopic duodenal papilla

Endoscopic retrograde direct cholangioscopy extracting stones from common bile duct in a case of ectopic duodenal papilla Ectopic opening of the duodenal papilla within the duodenal bulb is a rare anatomical anomaly, which may be associated with clinical conditions such as duodenal ulcer, duodenal stenosis, bile duct stones, or acute cholangitis [1,2].Recently, we successfully utilized endoscopic ultrasonography combined with endoscopic retrograde direct cholangioscopy (ERDC) [3,4] to diagnose and treat a case of an ectopic duodenal papilla complicated by common bile duct stones.