Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were reviewed and compared to the prior studies . A moderate right pleural effusion has slightly decreased since ___ . Right apical opacity corresponds to the right upper lung radiation fibrosis better characterized on CT torso of ___ . The left lung is clear , and there is no pulmonary edema or pneumothorax . Cardiac and mediastinal contours are normal .
    OUTPUT:
    
Moderate right pleural effusion has slightly decreased since ___ .