Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest demonstrate the lungs are hyperexpanded and there is persistent bilateral apical lucency , representing emphysemetous changes . The bilateral pulmonary hila are prominent , possibly representing vascular congestion , however an atypical bronchopneumonia can not be entirely excluded . There is no pneumothorax or pleural effusions . Subsegmental linear atelectasis is seen within the right mid lung .
    OUTPUT:
    
Bilateral hilar prominence could reflect pulmonary vascular congestion , however an atypical bronchopneumonia can not be excluded .