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.
a Full or Sill-proper nostril sill which is the most common variant and has the most muscle and soft tissue thickness among all 3 types; a mild protuberant area connects the columella and the ala. b In the Flat type, there is no protuberance between the vestibule of the nose and the upper lip and has the least thickness of the soft tissue. c In the Point type, the medial and lateral wall of the nostril sill gets close to each other to form an apex
