Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is mildly enlarged with a left ventricular predominance . The cardiac silhouette size appears minimally increased when compared to prior study . The mediastinal and hilar contours are relatively unchanged , with calcification of the aorta redemonstrated . The pulmonary vascularity is not engorged . There is a small left pleural effusion , increased from the prior study , and mild patchy opacity in the left lung base , which could reflect atelectasis , though infection or aspiration is not excluded . Subsegmental atelectasis is also likely present within the right lung base . There is no pneumothorax . Mild degenerative changes of the thoracic spine are noted .
    OUTPUT:
    
Small left pleural effusion increased when compared to the prior exams from ___ with minimal patchy opacity in the left lung base which may reflect atelectasis but infection or aspiration can not be excluded . Subsegmental atelectasis in the right lung base as well .