Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright AP and lateral radiographs of the chest demonstrate the lungs are relatively well expanded and clear . There is no pleural effusion , pneumothorax , pulmonary edema , or focal consolidation concerning for pneumonia . The cardiomediastinal silhouette is unremarkable . A spinal stimulator is again seen in the thoracic spine . Surgical clips are noted in the right upper quadrant .
    OUTPUT:
    
No acute cardiopulmonary process .