The main aim of this study is to validate the \[18F\]FDG on PET/CT for the diagnosis of metastatic ganglions at the mediastinum in SUS patients with non-small cell lung carcinoma considering sensitivity, specificity, positive predictive value, negative predictive value, accuracy. Other specific aims are:
* Analyze the diagnosis performance of the \[18F\]FDG on PET/CT in two timepoints (1 and 2 hours after exam), in relation to the staging of the non-small cell lung carcinoma
* Evaluate the addition of the iodinated contrast in the \[18F\]FDG to improve the images obtained from the PET/CT in the staging of the non-small cell lung carcinoma
