Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiographs demonstrates no focal opacity convincing for pneumonia . Chronic appearing scarring at the right lung base and mid lung are unchanged . Cardiomediastinal and hilar contours are within normal limits . A left chest wall port is identified its tip terminating in the low SVC in unchanged position . There is no pleural effusion or pneumothorax . Visualized osseous structures demonstrates no acute abnormality . Note is made of several clips in the right axilla . No free air is identified injured the right hemidiaphragm . .
    OUTPUT:
    
No acute intrathoracic abnormality .