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.
CEA: Carcinoembryonic antigen; ECOG PS: Eastern Cooperative Oncology Group performance score; LNM: lymph node metastasis; SCC-A: squamous cell carcinoma-related antigen; SD, standard deviation. *According to the TNM classification, 8th edition (7).
