Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are increased interstitial markings bilaterally not significantly changed from ___ , but no focal opacities . Heart size is top normal . The aorta is tortuous . There is no pleural effusion or pneumothorax . Sternotomy wires as well as mediastinal surgical clips from prior CABG are re-demonstrated and unchanged in position .
    OUTPUT:
    
Diffuse increased interstitial markings are compatible with minimal interstitial edema . No focal opacities concerning for pneumonia .