Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There diffuse interstitial opacities in the left lung with a nearly normal appearance of the right lung . Cardiomediastinal and hilar contours are unremarkable . There is a tortuous aorta with some atherosclerotic calcifications of the aortic knob . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Asymmetric interstitial opacities may be due to asymmetric edema , infection or aspiration given history of vomitting . Follow up with chest radiographs recommended after treatment .