Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were provided . Overall , there has been no change in the overall size of the large left pleural effusion Compared with several prior studies dating back to ___ . The lung volumes are low with left mid and lower lung collapse likely secondary to compressive effect from effusion . No gross evidence for pulmonary edema . The heart size can not be assessed . The overall mediastinal contour is unchanged . Chronic - appearing deformity of the right humeral head / neck is noted . Bilateral AC joint arthropathy noted . Degenerative hypertrophic changes along the T - spine noted anteriorly .
    OUTPUT:
    
Unchanged large left pleural effusion with collapse in the left mid and lower lung .