Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . Lung volumes are low with bibasilar atelectasis noted . No convincing evidence for pneumonia though lung bases are poorly assessed due to presence of atelectasis . No large effusion or pneumothorax . No convincing signs of edema or congestion . Heart size is difficult to assess . Mediastinal contour is normal . Bony structures are intact . Prominent spurs are noted anteriorly in the lower T - spine .
    OUTPUT:
    
Bibasilar atelectasis . No convincing signs of pneumonia .