Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable upright view of the chest was obtained . Cardiomediastinal silhouette is stable . Lungs are well expanded and clear . There is no focal consolidation , pleural effusion or pneumothorax . Pulmonary vasculature are more prominent compared to the prior exam but there is no edema . Cervical fusion hardware noted .
    OUTPUT:
    
No acute intrathoracic abnormality .