Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Allowing for that , there is no definite change in cardiac , mediastinal or hilar contours . A right basilar opacity has probably cleared . However , mild new opacification is present at the left lung base partly obscuring the left hemidiaphragm . Small pleural effusions are difficult to exclude .
    OUTPUT:
    
Suspected left basilar opacity , with a pattern commonly associated with atelectasis . If developing infection is a clinical concern then short - term follow - up radiographs may be helpful , preferably with PA and lateral technique if feasible .