Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is streaky density at the lung bases consistent with subsegmental atelectasis . A small area of focal consolidation can not definitely be excluded . The lungs appear otherwise clear except for a small left pleural effusion which is unchanged . The heart and mediastinal structures are stable . An endotracheal tube nasogastric tube and transvenous pacemaker remain in place . There is no longer evidence of pulmonary vascular congestion .
    OUTPUT:
    
Bibasilar subsegmental atelectasis . Left pleural effusion .