Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph demonstrates a slight interval decrease of persistent enlargement of the cardiomediastinal silhouette . There is also persistent though decreased bilateral pulmonary opacifications . The remaining opacifications are predominantly within the right lower and left upper lungs . No pneumothorax is identified . Possible small left pleural effusion present .
    OUTPUT:
    
Decreased evidence of pulmonary edema , though there is persistent multifocal opacifications , which may represent asymetric resolving edema versus infectious process . Small left pleural effusion .