Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided PICC remains in the distal SVC 3 .4 cm caudal to the carina . Heart size is normal . Cardiomediastinal silhouette and hilar contours are unchanged . Lungs are clear . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary abnormality .