Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Midline sternotomy wires and mediastinal clips are again noted . Right upper extremity PICC line is again seen with its tip in the expected location of the low SVC . Lung volumes are low with mild left basilar platelike atelectasis . Tracheobronchial tree calcification is noted . There is no focal consolidation , effusion , or pneumothorax . The cardiomediastinal silhouette is normal . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
No acute intrathoracic process