Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Moderate to severe cardiomegaly is not substantially changed in the interval . The aorta is tortuous and diffusely calcified . There is a mild pulmonary edema , worse in the interval with moderate size bilateral pleural effusions , right greater than left , also increased since the previous study . Bibasilar airspace opacities may reflect areas of compressive atelectasis though infection can not be excluded . A fiducial marker is noted within the left upper lobe . There is no pneumothorax . Multiple compression fractures within the lower thoracic and upper lumbar spine appear unchanged .
    OUTPUT:
    
Mild pulmonary edema with moderate size bilateral pleural effusions . Bibasilar airspace opacities may reflect atelectasis but infection is difficult to exclude .