Chronic obstructive pulmonary diseases (COPD)-2 in previous discussion we have discussed Definition of COPD ASTHMA so today we will continue our discussion with Bronchiectasis Bronchiectasis = bronchiolar +dialation A disease state defined by the permanent, irreversible dilation of the bronchial tree caused by destruction of the muscle and elastic supporting tissue. Secondary to chronic bronchitis,measles and pertussis Pathogenesis: obstruction and chronic persistent infection (S.aureus, Klebsiella Anaerobes) Secondary to chronic bronchitis,Measles and Pertussis Bacterial infection with virulent organisms: S.aureus, Klebsiella Anaerobes Location: lower lobes focal or diffuse Obvious dilated bronchus or bronchioles with thickened wall Typical clinical manifestation Persistent or recurrent cough with purulent sputum. Haemoptysis https://www.hanxinclinic.com/index.php/2019/09/16/chronic-obstructive-pulmonary-diseases-copd-2/