Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiographs demonstrate clear lungs bilaterally . Cardiomediastinal and hilar contours are normal . There is no pleural effusion , pulmonary edema , or pneumothorax . No air under the right hemidiaphragm is present .
    OUTPUT:
    
No acute intrathoracic abnormality . No evidence of pneumonia .