Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A left - sided central venous catheter ends in the upper right atrium , unchanged in position . Peritoneal calcifications are again seen and unchanged . There is no focal consolidation . There is no pleural effusion or pneumothorax . There is no free air under the diaphragm .
    OUTPUT:
    
No evidence of free air . No acute cardiopulmonary process .