Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is unchanged . The mediastinal and hilar contours are unremarkable . Left PICC has been removed . Elevation of the right hemidiaphragm persists . Small bilateral pleural effusions are noted . Patchy opacity in the left lung base may reflect atelectasis , but infection is not excluded . Linear opacities in the left mid lung field likely reflects scarring or subsegmental atelectasis . No pneumothorax is identified . Degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
Patchy left basilar opacity may reflect atelectasis but infection can not be excluded in the correct clinical setting . Small bilateral pleural effusions .