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.
Chest computed tomography images of paratracheal lymph nodes. (A) Paratracheal lymph node enlarged at the time of initial diagnosis. (B) Disease progression after two cycles of pemetrexed-cisplatin as first-line chemotherapy. (C) Partial response after 2 months of erlotinib. (D) Image before rebiopsy, showing the paratracheal lymph node had increased in size despite erlotinib treatment.
