Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to ___ , again seen are increase interstitial markings projecting over the left lung , unchanged compared to ___ . Unchanged small right pleural thickening or effusion . No left pleural effusion . Cardiomegaly , as before . The aorta is calcified , indicating atherosclerosis . Aorta is tortuous .
    OUTPUT:
    
No acute intrathoracic abnormality .