Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild cardiomegaly is persistent . The thoracic aorta is tortuous , otherwise the hilar and mediastinal contours are unremarkable . The aorta is generally large , measuring up to 4 - cm on the lateral film , and unchanged compared to the prior exam . There is no pleural effusion , or pneumothorax . No focal consolidations concerning for pneumonia are identified .
    OUTPUT:
    
No acute intrathoracic abnormalities identified .