Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is borderline enlarged . The mediastinal contours and pulmonary vasculature are similar to the prior examination . Previously seen right basilar opacity has resolved . No new focal consolidation is identified . There is no pleural effusion or pneumothorax . Old healed right posterolateral rib fracture is noted .
    OUTPUT:
    
No acute intrathoracic abnormality .