Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided PICC is again seen with tip at the upper SVC . There has been interval placement of right - sided PICC with tip projecting over the right atrium and should be withdrawn by approximately 4 cm for optimal placement . Otherwise , there has been no change . Dense right basilar opacity in part due to an effusion with adjacent atelectasis is again noted .
    OUTPUT:
    
New right PICC tip projects over the right atrium and should be withdrawn approximately 4 cm for optimal positioning . No other change .