Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low , somewhat accentuating the bronchovascular structures . Streaky right lower lobe opacity is concerning for pneumonia . Minimal patchy opacity in the retrocardiac region is likely atelectasis . There is no dense consolidation . There is no pulmonary edema , pleural effusion , or pneumothorax . The mediastinal silhouette is normal . The cardiac size is at the upper limits of normal , and unchanged from prior exams .
    OUTPUT:
    
Right lower lobe patchy opacity concerning for pneumonia .