Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is an opacity seen within the right upper lobe which may represent pneumonia . However , given the history of hemoptysis this could represent blood . There is no pleural effusion or pneumothorax . The heart size is normal . The mediastinal contours are unremarkable .
    OUTPUT:
    
Right upper lobe opacity which may represent pneumonia , although , hemorrhage is not excluded . Please refer to the following CT for additional findings .