Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with ___ , I doubt significant interval change . The patient is status post sternotomy , with a prosthetic valve . Again seen is mild cardiomegaly with a left ventricular configuration . The aorta is slightly unfolded , similar to the prior film . No CHF , focal infiltrate , or effusion is identified .
    OUTPUT:
    
No acute pulmonary process identified .