Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with prior radiographs on ___ , there has been interval increase in right basilar and right upper lung zone opacities . There is no pneumothorax . The left lung is clear . There is no edema . Cardiomediastinal silhouette is unchanged . A right PICC is stable in position
    OUTPUT:
    
Interval increase in right basilar and upper lung zone opacities , likely reflecting multifocal pneumonia .