Commonest cause of lung abscess:: (A) Aspiration, (B) Hematogenous spread from distant site, (C) Direct contact, (D) Lymphatic spread
Answer is A. Lung Abscess Lung abscess refers to a microbial infection of the lung that results in necrosis of the pulmonary parenchyma MC cause of primary lung abscess: Anaerobic bacteria Etiology of anaerobic lung abscess: Aspiration