Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are mildly hypoinflated with crowding of vasculature and right lower lobe atelectasis . Cephalization of vasculature is mild . No pleural effusion or pneumothorax . Heart size , mediastinal contour , and hila are unremarkable . Limited assessment of the osseous structures are unremarkable .
    OUTPUT:
    
1 . Low lung volumes with right lower lobe atelectasis . 2 . Mild vascular congestion . 3 . No pneumonia .