An official website of the United States government
Here's how you know
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.
Aggressive features of cSCC. Aggressive features used to define this cohort are shown in red. Features that result in up-staging by AJCC criteria are shown in blue.