Dejan Vuckovic1,2, Dejan Ilincic3, Nada Vuckovic4. 1. Centre for Pathology, Institute for Pulmonary Diseases of Vojvodina, Put dr Goldmana 4, 21204, Sremska Kamenica, Serbia. dinvucko@yahoo.com. 2. Department of Pathology, Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia. dinvucko@yahoo.com. 3. Thoracic Surgery Clinic, Institute for Pulmonary Diseases of Vojvodina, Put dr Goldmana 4, 21204, Sremska Kamenica, Serbia. 4. Pathology and Histology Centre, Clinical Centre of Vojvodina, Novi Sad, Serbia.