Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment is limited by patient rotation and the patient 's neck obscuring the left apex . Heart size appears moderately enlarged accounting for limitations in technique . There is diffuse calcification of the aorta . Mediastinal contour is difficult to assess given the degree of rotation , but does not appear substantially changed from the previous study . Mild pulmonary edema is present . Small left pleural effusion may be minimally increased in size compared to the prior study . A small right pleural effusion is also likely present . Bibasilar airspace opacities may reflect atelectasis but infection is not excluded . No pneumothorax is identified . There are moderate degenerative changes in the thoracic spine .
    OUTPUT:
    
Mild pulmonary edema and small bilateral pleural effusions , slightly increased in size compared to the prior study . Bibasilar airspace opacities may reflect atelectasis but infection can not be excluded .