Pulmonology is concerned with the function of the respiratory system that includes the bronchial tubes and lungs. It is considered a specialty within the larger field of internal medicine, while pulmonology intersects with emergency care, intensive care, and cardiothoracic surgery. Pulmonologists are the one who specializes in this field, and they may work in clinics, hospital settings, and outpatient practices. There are a plenty of conditions that can be assessed as well as treated by a pulmonologist, which includes lung trauma, hereditary conditions affecting the lungs, acquired diseases, chronic conditions, cancers, and infections. Pulmonologists are focused on keeping the airway open for the patients to breathe freely. Few doctors choose to specialize and practice in the management of a specific pulmonary condition, such as asthma or cystic fibrosis, developing treatment plans that are tailored to their patients. Treatments: Pulmonary Function Test, Bronchoscopy, transbronchial biopsy, Positron, emission tomography, Scintigraphy, Respiratory therapy.