Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph is obtained . The heart is markedly enlarged . There are bilateral pleural effusions , appearing similar to the prior on the left , though diminished on the right with right effusion appearing loculated . The possibility of a left lower lobe pneumonia is impossible to exclude given the opacification and presumed left lower lobe atelectasis . No pneumothorax . Upper lungs appear well aerated . Bony structures appear stable .
    OUTPUT:
    
Cardiomegaly , bilateral pleural effusions , stable left and diminished right ( loculated ) . Can not exclude left lower lobe pneumonia .