Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided Port - A - Cath terminates at the mid SVC . The heart size is normal . The mediastinal contour is within normal limits . There is no pneumothorax , focal consolidation , or pleural effusion . Mild scarring or atelectasis is seen at the left base .
    OUTPUT:
    
No acute intrathoracic process .