Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . A right internal jugular catheter ends in the mid superior vena cava . Sternotomy wires and mediastinal clips are from prior CABG . Compared to the prior radiograph of ___ , lung expansion has increased . Left lower lobe opacities , most likely atelectasis , have decreased . There are small bilateral pleural effusions . Cardiomegaly persists .
    OUTPUT:
    
Improved lung expansion . Small bilateral pleural effusions . Stable cardiomegaly .