D Reis1, C Marques2, M Dias3, S Campainha3, L Cirnes4, A Barroso3. 1. Pulmonology Department, Vila Nova de Gaia-Espinho Hospital Center, Conceição Fernandes Street, 1079 Vila Nova de Gaia, Portugal. Electronic address: daniel.reis91@hotmail.com. 2. Pulmonology Department, Vila Nova de Gaia-Espinho Hospital Center, Conceição Fernandes Street, 1079 Vila Nova de Gaia, Portugal. 3. Thoracic Tumors Multidisciplinary Unit, Pulmonology Department, Vila Nova de Gaia-Espinho Hospital Center, Conceição Fernandes Street, 1079 Vila Nova de Gaia, Portugal. 4. Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Portugal.