Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A Port -a - Cath terminates in the lower superior vena cava . The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . Streaky opacity effacing the right costophrenic angle suggests minor atelectasis . Otherwise the lungs appear clear .
    OUTPUT:
    
No definite evidence of acute cardiopulmonary disease .