Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Upright portable chest radiograph is limited by multiple external wires overlying the chest . Residual linear airspace opacity in the right upper lobe is present . There is no pneumothorax . Lung volumes are low . Cardiac silhouette is accentuated by low lung volumes , and remains moderately enlarged . There is mild pulmonary edema and vascular congestion .
    OUTPUT:
    
1 . No pneumothorax . 2 . Residual opacity in the right upper lobe is unchanged . 3 . Unchanged moderate cardiomegaly and mild pulmonary edema .