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 ultrasound-guided antegrade stone treatment. (A) Biliary access was achieved under endoscopic ultrasound guidance. (B) The ampulla was dilated with a balloon. (C) Bile duct stones were extracted in an antegrade manner using a balloon catheter.
