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Review paper

Positron emission tomography/computed tomography (PET/CT) and CT for N staging of non-small cell lung cancer

By
Sandra Vegar Zubović Orcid logo ,
Sandra Vegar Zubović

Clinic of Radiology, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina

Spomenka Kristić ,
Spomenka Kristić
Contact Spomenka Kristić

Clinic of Radiology, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina

Besima Hadžihasanović
Besima Hadžihasanović

Clinic of Radiology, University Clinical Center Sarajevo, Sarajevo, Bosnia and Herzegovina

Abstract

Aim
The aim of this study is to investigate the possibilities of non-invasive diagnostic imaging methods, positron emission tomography/computed tomography (PET/CT) and CT, in clinical N staging of non-small cell lung cancer (NSCLC).
Methods
Retrospective clinical study included 50 patients with diagnosed NSCLC who have undergone PET/CT for the purpose of disease staging. The International association for the study of lung cancer (IASLC) nodal mapping system was used for analysis of nodal disease. Data regarding CT N-staging and PET/CT Nstaging were recorded. Two methods were compared using χ2 test and Spearman rank correlation coefficient.
Results
Statistical analysis showed that although there were some differences in determining the N stage between CT and PET/CT, these methods were in significant correlation. CT and PET/CT findings established the same N stage in 74% of the patients. In five patients based on PET/CT findings the staging was changed from operable to inoperable, while in four patients staging was changed from inoperable to operable.
Conclusion
PET/CT and CT are noninvasive methods that can be reliably used for N staging of NSCLC.

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