Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal view of the chest . Heart is mildly enlarged . Bilateral airspace opacities likely represent pulmonary edema , progressed since prior . Left costophrenic angle is blunted , suggestive of small pleural effusion . No definite right pleural effusion is seen . There is no pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Sternotomy wires , coils , prosthesis and multiple surgical clips are noted .
    OUTPUT:
    
Mild cardiomegaly , small left pleural effusion and is moderate pulmonary edema , increased since ___ .