Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Tracheostomy tube is in unchanged position . The left lower lobe opacities are slightly worse than in ___ . Read in conjunction with the CT scan from ___ , this patient may have chronic atelecatsis related to inspissated secretions , plus pleural effusion , less likely infection . Elsewhere , the lungs appear clear .
    OUTPUT:
    
Left lower lobe opacity increased from ___ , consistent with chronic atelecatsis and effusion .