Septic Pulmonary Emboli

Abstract

The cases of 17 patients with septic pulmonary emboli, a radiologically significant manifestation of right-sided bacterial endocarditis or septic thrombophlebitis, are reviewed. Characteristic radiologic features may permit early, correct diagnosis. The emboli may present as small, scattered areas of consolidation simulating bronchopneumonia and extending rapidly or as round or wedge-shaped peripheral opacities. Quickly excavating, they often produce thin-walled cavities simulating pneumatoceles. Coalescence of necrotic infarcts may result in formation of large lung abscesses. Lesions may extend to involve the pleura, causing empyema, bronchopleural fistula, and pneumothorax. Following therapy, lesions resolve completely or leave residual pleural thickening or areas of pulmonary fibrosis.