Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest demonstrates low lung volumes . The left lung base opacities obscure left hemidiaphragm . Associated small left pleural effusion can not be excluded . There is no right pleural effusion . Mnild right bsae atelectasis is also seen . No pneumothorax is noted . Hilar and mediastinal silhouettes are unremarkable . Mild perihilar vascular congestion is seen . Heart size is normal . Partially imaged upper abdomen is unremarkable .
    OUTPUT:
    
Slight prominence of the hila , could be due to vascular engorgement . Bibasilar opacities could represent atelectasis , aspiration , or infection in the appropriate clinical setting .