Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , the left PICC tip has been retracted slightly , now projecting at the mid SVC . Lungs are clear without focal consolidation , pleural effusion , or pneumothorax . No evidence of free subdiaphragmatic air , on this limited evaluation .
    OUTPUT:
    
1 . The left PICC tip has been retracted slightly , now projecting at the mid SVC . 2 . No focal consolidation or evidence of free subdiaphragmatic air , on this limited evaluation .