Chest radiographic findings in a 52-year-old man who presented with pneumonia subsequently diagnosed as Legionnaires’ disease. The patient was a cigarette smoker with chronic obstructive pulmonary disease and alcoholic cardiomyopathy; he had received glucocorticoids. Legionella pneumophila was identified by direct fluorescent antibody staining and culture of sputum. Left: Baseline chest radiograph showing long-standing cardiomegaly. Center: Admission chest radiograph showing new rounded opacities. Right: Chest radiograph taken 3 days after admission, during treatment with erythromycin.
Read more about Legionnaires’ Disease in Context:
Harrison’s Principles of Internal Medicine, 19e: Chapter 184. Legionella Infections
Read more about Legionnaires’ Disease:
CURRENT Diagnosis and Treatment: Pediatrics, 24e: Chapter 42. Infections: Bacterial & Spirochetal
Centers for Disease Control and Prevention: Legionella (Legionnaires' Disease and Pontiac Fever)