The precise staging of lymph-node and distant metastases is pivotal for the choice of surgical procedures and overall therapy planning for patients with lung cancer. FDG-PET/CT plays a central role in the diagnostic algorithm of patients with potentially curable disease. In patients with histologically proven lung cancer, FDG-PET/CT provides a higher diagnostic accuracy in the staging of lymph-node and distant metastases compared to staging with CT alone. Furthermore, as a whole body examination, FDG-PET/CT may replace further additional examinations. Prospective studies have also shown that the number of unnecessary thoracotomies and mediastinoscopies can be reduced by the inclusion of FDG-PET in the preoperative staging.
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