Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low and accentuates the heart size and the interstitial markings . There is obscuration of the bilateral heart borders , which is likely due to atelectasis . Heart size is within normal limits . Mediastinal and hilar contours are unremarkable . There is no evidence for pulmonary edema , consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
Basal atelectasis , and less likely to be pneumonia .