'Pulmonologistsare' doctors who are specialized in lungs related diseases like pneumonia, asthma, bronchitis etc. Some pulmonologists holds expertise in surgery, which are categorized as lung surgeon. It involves both clinical and basic research of the respiratory system including the anatomy of epithelium to most effective treatment of pulmonology hypertension while scientific research is carried out to find the causes and possible treatment of diseases such as chest tuberculosis and lung cancer they also carry out different blood tests, spirometry, pulmonary function test and chest x-ray etc pulmonologists also include some cardiac investigation since heart diseases can also give pulmonary signs.