Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were compared to previous exam from ___ . Compared to prior , there has been interval enlargement of the left - sided pleural effusion . Superiorly , the left lung remains clear and the right lung is unremarkable without effusion as well . Cardiomediastinal silhouette is stable . Degenerative changes are noted at the shoulders and in the spine .
    OUTPUT:
    
Interval enlargement of previously seen left - sided pleural effusion . No other change .