Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are increased from prior . Residual atelectasis in the right lower lung is improved . No pleural effusion or pneumothorax . Hilar and cardiomediastinal contours are unchanged with mild cardiomegaly . A left pacemaker is continuous with a lead terminating in the right ventricle . Surgical clips in the right upper quadrant are unchanged .
    OUTPUT:
    
Residual atelectasis in the right lower lung is improved from ___ . No pneumonia .