Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is stable mild cardiomegaly . The mediastinum and hilar silhouettes are unremarkable . The lungs are clear without evidence of focal consolidations , pleural effusions or pneumothorax . There is relatively large prominence of the pulmonary arteries bilaterally the unchanged studies . The aorta is tortuous and calcified which is unchanged from previous studies
    OUTPUT:
    
No acute intrathoracic findings .