Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size is normal . Mediastinal contour is unchanged . Hilar contours are unremarkable and the known left lesion seen on prior CT is not well seen on the current exam . Pulmonary vasculature is not engorged . Continued streaky and patchy opacity within the left lung base likely reflects mild postobstructive atelectatic changes , not substantially changed in the interval . There is no large pleural effusion or pneumothorax . Emphysematous changes are again noted within the lung apices . There is minimal atelectasis in the right lung base . Degenerative changes are noted within the imaged thoracic spine . Amorphous calcification adjacent to the lateral aspect of the right humeral head may reflect calcific tendinopathy .
    OUTPUT:
    
Known left hilar lesion seen on prior CT is not well visualized on the current radiograph . Continued postobstructive atelectatic changes in the left lung base , not substantially changed in the interval .