Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Endoscopic retrograde cholangiography using a single-balloon enteroscope. A, Cholangiogram showing stones on both the hilar and ampullary sides of the stricture (arrow). B, C, Endoscopic views showing endoscopic sphincterotomy using a needle knife.
