Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable radiograph through the chest demonstrate clear lungs bilaterally . No focal consolidation is identified concerning for pneumonia . Cardiomediastinal and hilar contours are within normal limits . Incompletely visualized bilateral costophrenic angles . No large pleural effusion is identified . Visualized osseous structures demonstrate no acute abnormality .
    OUTPUT:
    
No acute intrathoracic abnormality .