Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrates clear lungs bilaterally . There is no pleural effusion or pneumothorax . The cardiomediastinal contour appears unchanged when compared to prior radiograph dated ___ . Osseous structures demonstrates no acute abnormality . Old deformity of the right lateral 6th rib is noted .
    OUTPUT:
    
No acute intrathoracic findings .