Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hypoinflated , causing crowding of the pulmonary vasculature . There are linear opacities at the bases , likely atelectasis . The hilar and cardiomediastinal contours are normal . There is no pneumothorax . There is no pleural effusion . Pulmonary vascularity is normal .
    OUTPUT:
    
Hypoinflated lungs with bilateral probable atelectasis . However , early pneumonia in the proper clinical setting can not be fully excluded .