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.
Representative images of the scar around the fistula before completion of Over-The-Scope-Clipping (OTSC) procedures. (A) A scar is found around the fistula, resulting in difficulty in clipping (blue arrowheads). Blue arrow indicates the fistula. (B): Removal of the scar by argon plasma coagulation. (C): OTSC procedures were performed after removal of the scar.
