Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mildly increased density in the left posterior costophrenic sulcus may represent an early consolidation in the proper clinical setting . There is no pneumothorax , pulmonary edema , or pleural effusion . The cardiomediastinal silhouette is normal .
    OUTPUT:
    
Mildly increased density in the posterior basilar segment of the left lower lobe may represent an early consolidation in the proper clinical setting .