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.
(A) CT-guided biopsy of the lung lesion at the time of diagnosis. (B) CT chest before erlotinib administration. (C) CT chest three months after erlotinib initiated. (D) CT-guided biopsy of the lung cancer at the time of progression on erlotinib.
