Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were reviewed . Compared to the most recent prior , mild pulmonary edema has slightly improved and the endotracheal tube and Swan - Ganz catheter has been removed . Upper lung vascular redistribution , tiny bilateral pleural effusions and moderate cardiomegaly are unchanged . A left pectoral defibrillator lead ends in the mid to distal right atrium . Aortic core valve and median sternotomy wires are intact and unchanged in alignment . Aortic core valve is unchanged in position . Mediastinal surfaces are relatively unchanged .
    OUTPUT:
    
Slight improvement in mild pulmonary edema .