Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low which accentuates the size of the cardiac silhouette which appears moderately enlarged . Mediastinal contour is unremarkable . Mild pulmonary edema is present with perihilar haziness and vascular indistinctness . Patchy opacities in the lung bases likely reflect areas of atelectasis . No pleural effusion or pneumothorax is identified . Cervical spinal fusion hardware is incompletely assessed . No acute osseous abnormalities are visualized . Multilevel degenerative changes are noted within the thoracic spine .
    OUTPUT:
    
Mild pulmonary edema and bibasilar atelectasis .