Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright radiograph of the chest demonstrates the lungs are well expanded and clear . The cardiomediastinal silhouette is unremarkable . There is no evidence of pneumothorax , pleural effusion , pulmonary edema or focal consolidation . There is no evidence of subdiaphragmatic free air .
    OUTPUT:
    
No acute cardiopulmonary process . No evidence of subdiaphragmatic free air .