Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A portable frontal chest radiograph again demonstrates thoracic spinal hardware and sternal wires . Lung volumes are low with increased prominence of the cardiac silhouette and bronchovascular crowding . Even allowing for this , there is cardiomegaly . Mild to moderate pulmonary edema is unchanged , as is retrocardiac opacity . Increased opacity in the right lower lung is new . Small bilateral pleural effusions are unchanged . There is no pneumothorax .
    OUTPUT:
    
1 . Unchanged retrocardiac opacity and new increased opacity in the right lower lung , which is concerning for pneumonia . 2 . Unchanged mild to moderate pulmonary edema .