1. Unit of Diagnostic Imaging, Department of Medical, Surgical and Neuro Sciences and of Radiological Sciences, University of Siena, Azienda Ospedaliero-Universitaria Senese, 53100 Siena, Italy
2. Unit of Pathological Anatomy and Histology, Department of Medical Biotechnologies, University of Siena, Azienda Ospedaliero-Universitaria Senese, 53100 Siena, Italy
3. Thoracic Surgery Unit, Department of Medical, Surgical and Neuro Sciences, University of Siena, Azienda Ospedaliero-Universitaria Senese, 53100 Siena, Italy