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.
Outcome of patients after initial treatment: a) R0 patients, b) R1 patients, c) R2 and non-surgical patients. R2=macroscopic tumor remaining post-operatively, R1=microscopic involved margins (residual disease), R0= microscopic tumor-free margins.
