CT and PET Findings in a Patient with Squamous-Cell Carcinoma of the Right Lung.

No abnormal mediastinal lymph nodes were observed at level 2 on the CT scan (Panel A). On the corresponding axial PET scan (Panel B) and coronal PET scan (Panel C), the uptake of 18F-fluorodeoxyglucose was increased (arrows). The arrow in Panel A indicates the area of increased uptake in Panels B and C.