Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are unchanged , with the heart size within normal limits . A rounded consolidative opacity within the lingula is mildly smaller compared to the prior study , measuring approximately 5 .7 x 4 .6 cm , previously 6 .2 x 5 .0 cm . No pulmonary vascular congestion is present . There is a small left pleural effusion , slightly increased compared to the prior study . No pneumothorax is identified . Cholecystectomy clips are noted in the right upper quadrant . There are no acute osseous abnormalities .
    OUTPUT:
    
Slight interval decrease in size of lingular consolidative opacity with interval increase in size of a small left pleural effusion .