TOPICS: Pulmonary parenchyma, mucociliary escalator, resident alveolar macrophages, pneumonia, cough reflex, comatose, anesthetized, cystic fibrosis, trauma, fever, chills, IL-1, TNF, hemoptysis, hypoxemia, pleuritic chest pain, percussion, radiographic infiltrate, lobar opacification, patchy infiltrate, lobar pneumonia, consolidation, congestion, red hepatization, gray hepatization, resolution, bronchopneumonia, patchy consolidations, interstitial pneumonia, atypical pneumonia, walking pneumonia, cryptogenic organising pneumonia, bronchiolitis obliterans organising pneumonia, plugging, amiodarone, secondary pneumonia, aspiration pneumonia, alcoholics, comatose, cystic fibrosis, mucous plugs, erythema multiforme, targetoid skin lesions