Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy retrocardiac opacification appears similar to the prior examination . Mild hazy opacities can be seen in both lungs , but predominantly in the right mid lung , where cuffed airways are visible .
    OUTPUT:
    
Diffuse mild opacification , somewhat more prominent on the right than left , which could be seen with aspiration , among other possible causes , including pulmonary edema .