Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal view of the chest was obtained . Lung volumes are low , exaggerating heart size and bronchovascular markings . The heart is mildly enlarged . Patchy perihilar opacities and indistinct pulmonary vascular markings are compatible with pulmonary edema . No definite focal consolidation , pleural effusion , or pneumothorax is visualized . The osseous structures are unremarkable . A lower thoracic spine posterior fusion construct with pedicle screws and vertical fusion rods is incompletely imaged .
    OUTPUT:
    
1 . Patchy perihilar opacities and indistinct pulmonary vasculature , compatible with pulmonary edema . No definite focal consolidation . 2 . Mild cardiomegaly . 3 . Incompletely imaged thoracic spine fusion hardware .