Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are decreased , accentuating the cardiomediastinal silhouette and bronchovascular structures . Increased opacities at the left lung base obscure the left cardiac border and are concerning for an infectious process involving the lingula . There is mild pulmonary vascular engorgement . Probable small bilateral pleural effusions . No definite pneumothorax . Left infusion port catheter is in unchanged position .
    OUTPUT:
    
Increased left lung base opacities are concerning for an infectious process involving the lingula in the appropriate clinical setting . Close followup is recommended .