Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided Port - A - Cath tip terminates within the mid SVC . The heart size is difficult to assess given the presence of moderate left and small to moderate right pleural effusions , similar in size when compared to the previous exam . Bibasilar airspace opacities most likely reflect compressive atelectasis though infection is not excluded . Mediastinal contours are unchanged . There is no pulmonary edema . No pneumothorax is identified . No acute osseous abnormality seen .
    OUTPUT:
    
Similar size of moderate left and small to moderate right pleural effusions with bibasilar airspace opacities likely reflecting compressive atelectasis . Infection , however , at the lung bases is not excluded .