Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral chest radiograph demonstrates cardiomegaly which appears mildly increased in size relative to prior studies . While this may reflect increased cardiomegaly , small pericardial effusion can not be excluded . Mediastinal and hilar contours are unchanged when compared to prior study dated ___ . Mild vascular congestion is noted with cephalization of vessels . There is no pleural effusion or overt pulmonary edema . Stable rightward deviation of the trachea is noted . The thoracic aorta is torturous . No acute osseous abnormality is seen .
    OUTPUT:
    
Mildly enlarged heart size could reflect cardiomegaly versus small pericardial effusion . Mild vascular congestion .