Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A large right pleural effusion displaces the lower mediastinum to the left . Bulging contour of the anterior aspect of the hilar structures on the lateral radiograph raises concern for central adenopathy , which may be substantial . The left lung is clear . There is no pneumothorax .
    OUTPUT:
    
Large right pleural effusion , which may obscure underlying malignancy or infection . Suspected central adenopathy . Contrast enhanced chest CT following drainage is recommended .