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Empyema on lung US. A, Anteroposterior chest radiograph and B, coronal chest CT image show a large, right-sided empyema occupying the pleural space with associated compression of the pulmonary parenchyma in a 9-year-old boy. Lung US C, grayscale and D, Doppler images demonstrate a multiloculated complex-appearing fluid collection in the pleural space with septations and internal debris without internal color flow.
