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Lung Abscess Dr Sheetu Singh Assistant professor Department of Chest & tuberculosis

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Lung Abscess Dr Sheetu Singh Assistant professor Department of Chest & tuberculosis

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  1. Lung Abscess Dr Sheetu Singh Assistant professor Department of Chest & tuberculosis SMS Medical College, Jaipur

  2. Anatomic Alterations of the Lungs • Alveolar consolidation • Alveolar-capillary and bronchial wall destruction • Tissue necrosis • Cavity formation • Fibrosis and calcification of the lung parenchyma • Bronchopleural fistulae • Atelectasis • Excessive airway secretions and empyema

  3. Etiology • Pneumonia caused by aspiration (most common) • Klebsiella • Staphylococcus • Predisposing factors for aspiration • Alcohol abuse • Seizure disorders • General anesthesia • Head trauma • Cerebrovascular accident • Swallowing disorders

  4. Etiology (Less frequent causes) • Aerobic organisms • Streptococcus pyogenes • Klebsiellapneumoniae • Escherichia coli • On rare occasions • Streptococcus pneumoniae • Pseudomonas aeruginosa • Legionellapneumophila

  5. Etiology (Other organisms that may lead to a lung abscess) • Mycobacterium tuberculosis • Fungal organisms • Histoplasmacapsulatum • Coccidioidesimmitis • Blastomyces • Aspergillusfumigatus • Parasites • Paragonimuswestermani • Echinococcus • Entamoebahistolytica

  6. Etiology Lung abscess may also develop from: • Bronchial obstruction • Vascular obstruction • Interstitial lung disease • Bullae or cysts • Penetrating chest wounds • Bronchogenic carcinoma • Congenital cysts

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