Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Dialysis catheter again noted terminating in the right atrium . There is persistent hilar congestion though pulmonary edema is intervally improved . There is , however , persistent retrocardiac and right lower lobe opacity which could represent pneumonia or aspiration in the correct clinical setting . No large effusion is seen . No pneumothorax . Cardiomediastinal silhouette is stable . Bony structures are intact . Clips in the left apex again noted . Extensive vascular calcification in the left arm partially visualized .
    OUTPUT:
    
Intervally improved pulmonary edema . Persistent lower lung opacities which could represent pneumonia or aspiration .