Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable frontal upright view of the chest is provided . External pacing wires and electronics partially obscure the view . Moderate cardiomegaly is unchanged . Lung volumes have slightly increased . Mild pulmonary edema persists . There is no focal consolidation , large pleural effusion or pneumothorax . Sternotomy wires are noted .
    OUTPUT:
    
Moderate cardiomegaly and mild pulmonary edema .