Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest . Severe thoracic dextroscoliosis is similar to prior with a stable appearance of mild cardiomegaly and mediastinal contours . Interstitial markings are diffusely increased with mild cephalization of vessels , consistent with mild pulmonary edema . Ill - defined bilateral lower lung opacities are nonspecific and could represent atelectasis or infection . No pneumothorax or substantial pleural effusion .
    OUTPUT:
    
Pulmonary edema with ill - defined lower lung opacities which could represent either atelectasis or infection .