Prof. Dr. Ömer Deniz’s areas of interest are all areas of the pulmonology specialty, but the areas he is particularly interested in are; COPD (emphysema, chronic bronchitis), bronchial asthma, chronic cough, dyspnea differential diagnosis, Covid-19 lung involvement and Covid-19 lung involvement follow-up and management, pneumonia, respiratory failure, interstitial lung diseases (lung fibrosis and others), venous thromboembolism (pulmonary thromboembolism), pulmonary arterial hypertension, sarcoidosis, tuberculosis, lung diseases in immunocompromised patients, rare lung diseases, bronchiectasis, cystic fibrosis, lung nodules, lung cancer, pleural effusions ( fluid accumulation between the lung membranes), lung radiology, bronchoscopy, pulmonary function tests.