Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post right upper lobectomy . With interval increase in opacity projecting over the right hemi thorax consistent with volume loss in increased pleural effusion . The left lung is grossly clear . No pneumothorax is seen . The cardiac and mediastinal silhouettes are grossly stable .
    OUTPUT:
    
Status post right upper lobectomy . Interval increase in at least partially loculated right pleural effusion .