Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patchy left infrahilar opacity is seen which may be due to overlap of vascular structures but small focal consolidation in this region is not excluded . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Subtle patchy left infrahilar opacity may be due to overlap of vascular structures although small consolidation in this region is not entirely excluded in the appropriate clinical setting .