Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There has been interval repositioning of the left PICC line , the tip now extending to the mid SVC . No pneumothorax identified . Minimal blunting of left costophrenic angle is unchanged suggesting Trace effusion or mild pleural thickening . There is mild elevation of left hemidiaphragm which may be secondary to an element of left lower lobe collapse . No pleural effusion or pneumothorax identified . The size of the cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Interval repositioning of the left PICC line , now extending to the mid SVC . Left lower lobe atelectasis .