Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is slightly improved low lung volume with no areas of focal consolidation , pleural effusion , or pneumothorax identified . There is stable cardiomegaly with calcification of the aorta with no evidence of pulmonary edema or vascular congestion . The pleural surfaces are unremarkable .
    OUTPUT:
    
No evidence of heart failure or infection .