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.
CT of preinvasive lesion (AAH or AIS). Axial 2-mm image through the left upper lobe shows a 5 mm pure ground-glass nodule (GGN), which has remained stable for 8 years (arrow). AAH and AIS can be single or multiple. AIS, adenocarcinoma in situ; CT, computed tomography.
