Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Lung volumes are low limiting assessment . No convincing evidence for focal consolidation , large effusion or pneumothorax . The cardiomediastinal silhouette appears grossly unremarkable . The mildly prominent appearance of the mediastinum correlates with normal vasculature on the CTA performed same day . Bony structures are intact .
    OUTPUT:
    
No acute findings .