Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright view of the chest demonstrates interval removal of endotracheal tube . Low lung volumes accentuate bronchovascular markings . Left costophrenic angle is not fully included on this exam , however , a small left pleural effusion is likely . Retrocardiac consolidation likely reflects atelectasis . Mild perihilar vascular congestion is noted . Right lung is clear without pleural effusion or pneumothorax . Hilar and mediastinal silhouettes are unremarkable . Heart size is normal .
    OUTPUT:
    
Left lung base consolidation , most likely atelectasis with associated likely small left pleural effusion .