Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is bulging of right lower mediastinal contour which appears to be extending beyond the right heart border . Contour is sharply demarcated and smooth . There is no consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
Possible mediastinal mass . Chest radiograph with PA and lateral view is recommended for further evaluation .