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.
Erosion of the thyroid cartilage (a) and cricoid cartilage (b) indicates cartilage involvement by tumour. Sclerosis (arrowhead) is less specific, however may be used as an indicator of cartilage involvement for the arytenoid (c) or cricoid cartilages.
