Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated with linear streaky opacities at the lung bases , likely representing atelectasis . Heart size is moderately enlarged but stable . Aortic and tricuspid valve prostheses are in unchanged location . Moderate calcification of the aortic knob is again noted . No focal consolidation concerning for pneumonia . No evidence of pulmonary edema , pleural effusion , or pneumothorax . Median sternal wires are intact .
    OUTPUT:
    
Moderate cardiomegaly and bibasilar atelectasis are stable from ___ . No evidence of pulmonary edema or pneumonia .