Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a tortuous and calcified thoracic aorta . The cardiomediastinal silhouettes are stable . As on prior exams , diffuse interstitial prominence and stable moderate cardiomegaly is consistent with mild pulmonary edema . Prominence of the right hilum is unchanged . There is improved aeration of the left lung base in comparison to prior radiograph . There is no focal lung consolidation . There is no pneumothorax or pleural effusion .
    OUTPUT:
    
Moderate cardiomegaly and persistent mild pulmonary edema . Improved aeration of the left lower lobe . Interval resolution of left pleural effusion .