Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is stable compared to exams dating back to at least ___ . Aside from a mildly tortuous aorta , the hilar and mediastinal contours are normal . There is no focal consolidation concerning for pneumonia . There is no large pleural effusion or pneumothorax . The visualized osseous structures are unremarkable . Left - sided pacer extends to the apex of the right ventricle .
    OUTPUT:
    
No acute intrathoracic abnormalities identified .