Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are again noted . There relatively dense left basilar opacity silhouetting the hemidiaphragm . This is likely in part due to an effusion although superimposed consolidation is also suspected . Surgical chain sutures project over the right mid lung . The right lung is otherwise grossly clear within limitation of low lung volumes . The cardiomediastinal silhouette is grossly within normal limits . No acute osseous abnormalities .
    OUTPUT:
    
Dense left basilar opacity , potentially due to component of effusion although superimposed consolidation is likely . Followup after treatment is suggested to document resolution .