Abstract
Using positron emission tomography (PET) in the diagnosis of suspected malignant lymph nodes in non-small cell lung cancer is well established. The main problem is that false positives values derived from SUV low (<3). The main objective of this study is to establish an optimal value for predicting malignancy. This is a retrospective analysis of 50 patients who underwent FNA of mediastinal lymphadenopathy endobronchial ultrasound guided. Anthropometric variables, six-minute walking test, pulmonary function tests were collected and and biopsied lymph nodes and values of SUV on PET of these lymph nodes were analyzed. A statistical study was performed with the SPSS statistics program. Analyzes of sensitivity, specificity and ROC curves were done. The minimum value of SUV was 1.80 and the maximum of 25.23. 21 cancers were diagnosed. ROC curve results and sensitivity study is shown in figure added. Using a range of from 2.5 SUV, in our cohort we have observed that a value of SUV of 2.5 had 85.7% sensitivity and 62.5% specificity (p <0.05) for the diagnosis of suspected malignant lymphadenopathy.
- Copyright ©ERS 2015