Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left lower lobe consolidation is unchanged from ___ . Right Port - A - Cath and tracheostomy tube are in stable position . The cardiomediastinal silhouette is unchanged . There is no pneumothorax .
    OUTPUT:
    
Left lower lobe consolidation representing atelectasis or pneumonia , less likely pleural effusion given its recent appearance .