Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes cause significant bronchovascular crowding . A moderate to large left pleural effusion with loculation within the fissure and associated left lower lobe and lingular collapse and / or consolidation . There is a small right pleural effusion . Pulmonary vascular congestion is likely mild , accentuated by volume loss . There is no pneumothorax . The cardiomediastinal silhouette is stable . A left pectoral single - chamber pacemaker and its leads project in expected location .
    OUTPUT:
    
1 . Low lung volumes causing bronchovascular crowding . 2 . Moderate to large left pleural effusion with loculation within the fissure and associated left lower lobe and lingular collapse and / or consolidation . 3 . Mild pulmonary vascular congestion .