Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single upright portable AP image of the chest demonstrates clear lungs bilaterally . No focal consolidation is identified . The cardiomediastinal and hilar contours are within normal limits . There is no pleural effusion or pneumothorax . No evidence of pneumoperitoneum .
    OUTPUT:
    
No evidence of pneumoperitoneum . No intrathoracic abnormality identified .