Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume but clear with the exception of linear right basilar atelectasis . No pleural effusion or pneumothorax is seen . Left - sided Port - A - Cath terminates in the distal SVC . The heart is top normal in size with normal cardiomediastinal contours . Mildly increased central pulmonary vascular congestion is noted .
    OUTPUT:
    
No acute intrathoracic process with mild pulmonary vascular congestion .