The lungs have a complex structure. It contains airways, air sacs or alveoli, interstitium (microscopically thin, delicate lining between the lungs' air sacs) and blood vessels. The lungs are covered all around by pleura (a thin lining). Lung diseases can be caused due to problems in any part of the lung. There are many ways to classify the lung disease and broadly it can be categorised according to the disease process and mechanism by which it affects normal lung functioning.
In most lung diseases, there is often an overlap of disease process such as emphysema involves both airflow obstruction and gas exchange problems. There are several types of lung diseases but the most common ones are:
Several diseases which affect the blood vessels of the lung may also affect lung functioning, but they are mostly categorised under cardiovascular diseases. Lung diseases have become a leading cause of death and disability worldwide. So if you have symptoms suggestive of lung disease, immediately consult your doctor.
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