Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The heart is markedly enlarged . There is a tiny left pleural effusion . Mild central congestion noted . No pneumothorax . Mediastinal contour is normal . Bony structures are intact .
    OUTPUT:
    
Marked cardiomegaly , tiny left effusion with central congestion .