Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right hemidiaphragm is significantly elevated , with platelike atelectasis in the right lung base . A left chest wall pulse generator with single defibrillator lead is in place . Biapical pleural thickening is noted . The heart is mildly enlarged . There is no pulmonary edema , pneumothorax , or focal consolidation .
    OUTPUT:
    
Significant asymmetric elevation of the right hemidiaphragm with right basilar atelectasis . No evidence of pneumonia .