Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Right mid and lower lung airspace opacification is similar to the prior study and consistent with a right lower lobe pneumonia , as previously described . There is no pleural effusion , pulmonary edema , or pneumothorax . The cardiomediastinal silhouette is partially obscured an otherwise normal .
    OUTPUT:
    
1 . Unchanged right lower lobe pneumonia . 2 . No pulmonary vascular congestion or pulmonary edema .