Use of [18]F-FDG on PET/CT as an Alternative Non-invasive Method for Staging of Lung Cancer

Use of [18]F-FDG - PET/CT in Brazil Unified Health System (SUS) as an Alternative Non-invasive Method for Staging of Lung Cancer

Instituto do Cérebro do Rio Grande do Sul - InsCer, Conselho Nacional de Desenvolvimento Científico e Tecnológico

To evaluate the diagnostic accuracy of the 18Fluor-fluorodeoxyglucose ([18F]FDG) in the Positron Emission Tomography/Computed Tomography (PET/CT) as compared to mediastinoscopy for staging of non-small cel lung carcinoma.

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

SUS patients with diagnosis or suspicion of non-small cell lung carcinoma with an indication for mediastinoscopy

Number of patients diagnosed in a positive manner with the gold standard and with the alternative method

Number of patients with a negative diagnosis according to the gold standard and the alternative method

Inclusion Criteria: Individuals with histological diagnosis or high suspicion of non-small cell lung carcinoma Patients who previously underwent staging of the disease with CT Clinical stages I-III AJCC 7th edition. Patients with indication for mediastinoscopy and linfonodal biopsy Patients without treatment for lung cancer Patients with biochemical and haematological exams Women of childbearing potential using contraceptive methods and negative pregnancy test Adults with more than 18 years old. Both genders Exclusion Criteria: Pregnant women Patients with other types of patients

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