Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-upright radiograph of the chest demonstrates a normal cardiomediastinal silhouette . The pulmonary vasculature is unremarkable . No large pleural effusion or pneumothorax is identified . No subdiaphragmatic air is identified , though evaluation is limited given portable technique . No definite consolidation is identified .
    OUTPUT:
    
No acute intrathoracic abnormality or subdiaphragmatic air identified .