Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again , the lungs are hyperinflated with coarsened interstitial pattern , most consistent with COPD . There is an opacity at the right base , which is mostly linear . Additionally , there are some unchanged calcifications at the left base , which likely represent costochondral cartilage . The apices of the lungs are clear . There is no pulmonary edema , pleural effusion , or pneumothorax . The aorta is tortuous and unfolded , unchanged from the prior exam . The heart size is normal .
    OUTPUT:
    
1 . Unchanged findings consistent with COPD . 2 . Linear opacity at the right base is likely atelectasis . In the proper clinical setting , developing pneumonia can not be completely excluded , however .