Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta is calcified , indicating atherosclerosis . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . There is a moderate right and small left pleural effusion . Adjacent bibasilar atelectasis is noted . There is a 4 mm nodular opacity overlying the left mid lung . Small bilateral , right greater than left , pleural effusions . No pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Moderate right and small left pleural effusions with adjacent atelectasis . A 4 mm density over the left mid lung suspicious for pulmonary nodule , potentially calcified . Consider nonurgent chest CT follow - up for further characterization .