Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are mildly decreased , and there continues to be a right lower lobe rounded opacity which corresponds with a Bochdalek hernia noted on prior CT . A hiatal hernia is again seen . The cardiac silhouette is stable in size , and a cardiac pacing device and its leads are in stable position . No focal consolidation , pleural effusion or pneumothorax is seen . No overt pulmonary edema is noted .
    OUTPUT:
    
No acute cardiopulmonary process .