Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided demonstrate midline sternotomy wires and mediastinal clips . There is cardiomegaly which appears slightly increased in the interval , now mild to moderate in overall size . There is mild pulmonary edema without pleural effusion . No pneumothorax . The mediastinal contour appears stable . Bony structures are intact .
    OUTPUT:
    
Cardiomegaly , increased since ___ , with mild pulmonary edema .