Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate cardiomegaly is unchanged . Calcifications in the aortic knob are once again re - demonstrated . There is central pulmonary vascular predominance with cephalization with mild interstitial edema . There are tiny bilateral pleural effusions . Previously seen increased opacities in the right base have improved . A calcified granuloma in the left lung is unchanged . There are subtle bibasilar densities which could represent atelectasis . There is no pneumothorax .
    OUTPUT:
    
Mild interstitial pulmonary edema and trace bilateral pleural effusions . Mild bibasilar atelectasis .