Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since the prior exam , there is increased pulmonary edema , which is now mild - to - moderate . There is increased left basilar atelectasis , though no focal airspace opacity to suggest a pneumonia . There are small bilateral pleural effusions , also increased in size since the prior exam . There is no pneumothorax . Calcifications are noted in the aortic arch . The heart is moderately enlarged , similar to prior exams . A left chest dual lead pacemaker device is unchanged .
    OUTPUT:
    
Mild - to - moderate pulmonary edema and small bilateral pleural effusions , increased since the prior exam .