why is it called functional endoscopic sinus surgery

why is it called functional endoscopic sinus surgery. There are some references to why is it called functional endoscopic sinus surgery in this article. If you are looking for why is it called functional endoscopic sinus surgery you've came to the right place. We have posts about why is it called functional endoscopic sinus surgery. You can check it out below.

Showing posts matching the search for why is it called functional endoscopic sinus surgery