Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The heart is moderately enlarged and there is mild pulmonary edema . More confluent opacity in the right medial lung base could represent a superimposed pneumonia . No large effusion or pneumothorax is seen . The mediastinal contour appears grossly within normal limits . Hilar engorgement is noted bilaterally . The bony structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Cardiomegaly with mild pulmonary edema . Possible pneumonia at the right medial lung base .