Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the ___ study there is relatively unchanged opacity overlying the lower thoracic spine on the lateral view . No pleural effusion is identified although there is persisting blunting of the left costophrenic angle on the frontal view . The right lung is clear . No pneumothorax identified . The size of the cardiac silhouette is enlarged but unchanged . Calcification of the aortic arch is noted .
    OUTPUT:
    
Diffuse haziness overlying the lower thoracic spine on the lateral view is unchanged from ___ . No focal consolidation is identified . If there is persisting clinical concern for pneumonia , further evaluation with a CT scan of the chest could be considered .