Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 10 :59 is submitted .
    OUTPUT:
    
Interval decrease in size but residual small to moderate right pleural effusion status post thoracentesis . No pneumothorax . Heart remains stably enlarged which may reflect cardiomegaly , although pericardial effusion should also be considered . Mediastinal contours are stable . Calcification of the aorta consistent with atherosclerosis . No evidence of pulmonary edema . Streaky opacities at the left base and more focal patchy opacity at the right base likely reflect atelectasis , although superimposed pneumonia can not be excluded .