Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest are compared to previous exam from ___ . There is increased opacity at the left lung base obscuring the left hemidiaphragm . This is compatible with at least some component of pleural effusion with possible underlying consolidation . Elsewhere , the lungs are clear . Cardiomediastinal silhouette is grossly within normal limits . There are unchanged wedge deformities identified in the lower thoracic and potentially upper lumbar spine .
    OUTPUT:
    
Left base opacity compatible with component of effusion with possible underlying consolidation .