Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal view of the chest demonstrates median sternotomy wires , the most inferior of which remain stably fractured . A left approach dual - channel dialysis catheter remains in stable position . Massive cardiomegaly is unchanged , with perihilar vascular engorgement and mild edema . There is near - complete obscuration of the left lower lung , where infection can not be excluded . The right lung and the left upper lung remain well aerated . There is no pneumothorax or large right effusion .
    OUTPUT:
    
Stable massive cardiomegaly and mild pulmonary edema . Supervening left lower lobe infection can not be excluded due to cardiac obscuration .