Intra-alveolar Hemorrhage Timothy C. Allen MD, JD Jaishree Jagirdar MD Philip T. Cagle MD Etiologies of intra-alveolar hemorrhage are often divided into diseases causing intra-alveolar hemorrhage associated with vasculitis, including…
Aspiration Pneumonia Timothy C. Allen MD, JD Roberto Barrios MD Abida Haque MD Philip T. Cagle MD Aspiration pneumonia in adults occurs generally from the aspiration of particulate gastric contents…
Acute Fibrinous and Organizing Pneumonia Anna Sienko MD Acute fibrinous and organizing pneumonia, also considered a form of acute lung injury, shares similar clinical presentation, causes, and some histologic features…
Organizing Pneumonia Philip T. Cagle MD Timothy C. Allen MD, JD Organizing pneumonia was previously referred to as bronchiolitis obliterans organizing pneumonia, or BOOP. It may occur in organizing acute…
Pulmonary Edema Timothy C. Allen MD, JD Roberto Barrios MD Pulmonary edema, the accumulation of extravascular fluid in the lungs, often accompanies passive heart failure such as left heart failure…
Diffuse Alveolar Damage Anna Sienko MD Timothy C. Allen MD, JD Diffuse alveolar damage, clinically represented as acute respiratory distress syndrome, can be idiopathic. But it is more often due…
Other Infections Timothy C. Allen MD, JD Philip T. Cagle MD Other infections occasionally occur in the lung and some may be identified on transbronchial biopsy. Rickettsiae, obligate intracellular bacteria,…
Mycobacteria Abida Haque MD Anna Sienko MD Philip T. Cagle MD Mycobacterium tuberculosis is an acid-fast bacillus (AFB), 0.5 × 4 to 5 μm, and the etiologic agent of tuberculosis…
Pneumocystis jiroveci Abida Haque MD Anna Sienko MD Philip T. Cagle MD Pneumocystis pneumonia is one of the most common pulmonary infections in patients with acquired immunodeficiency syndrome (AIDS) and…
