Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP chest radiograph demonstrates mildly improved inspiration compared to ___ : 46 a .m . There is persistent elevation of the left hemidiaphragm with associated atelectasis . The cardiomediastinal silhouette is stable . There is no pulmonary vascular congestion . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No evidence of pulmonary edema .