Fig. 4.
The summarized number of histological subtypes in each age categories and the surgical ratio of each histological subtype (NOS, not otherwise specified).
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.