Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Postoperative changes of right upper lobectomy are again noted . There are new small bilateral pleural effusions . Parenchymal opacity in the right upper lung and perihilar region have not significantly changed and could be in part due to post radiation / treatment changes . Superiorly , the left lung is clear . Cardiomediastinal silhouette is unchanged . Degenerative changes of the right shoulder and post - thoracotomy changes on the right again noted .
    OUTPUT:
    
Interval development of small bilateral pleural effusions . Otherwise , no significant change .