Pulmonary complications of pneumonia o Necrotizing pneumonia, lung abscess, vascular invasion, cavitation, empyma, bronchopleural fistula o Interstitial emphysema, pneumothorax, ARDS o Organizing pneumonia, brochiolitis obliterans pleural adhesions Necrotizing pneumonia, lung abscess, vascular invasion, cavitation, empyma, bronchopleural fistula.  Interstitial emphysema, pneumothorax, ARDS  Organizing pneumonia, brochiolitis obliterans, pleural adhesions