Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy ends 5 .3 cm above carina . Left side of PICC line is in cavoatrial junction or upper atrium . The exam today is less in rotation than ___ and there is no significant change in right lower lobe opacification . Slight improvement in left lower lobe opacification . Mediastinal and cardiac contour are within normal limits .
    OUTPUT:
    
Slight improvement of left lower lobe opacification . The rest of the exam is unchanged .