Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright frontal view chest . The lungs are clear without focal opacity , pulmonary edema , pleural effusion or pneumothorax . The heart size is normal . SMall hiatal hernia is suspected The aorta is tortuous . There is no free air beneath the hemidiaphragms . No acute osseous abnormality is seen . Posterior left ___ and ___ and posterior right 9th rib fractures appear chronic .
    OUTPUT:
    
No acute cardiothoracic process .