Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC tip now projects over the azygos arch . Position of cervical spinal hardware is unchanged . Interval resolution of right lower lobe collapse with mild , residual atelectasis at the right base . New retrocardiac opacity with obscuration of the left hemidiaphragm suggests left lower lobe atelectasis . Cardiomediastinal contours are grossly unchanged .
    OUTPUT:
    
Interval resolution of right lower lobe collapse with mild , residual atelectasis at the right base . New left lower lobe atelectasis . Left PICC tip now projects over the azygos arch .