Patient: I found a swelling under my left ear unintentionally after the Chinese New Year in 2009, it did not hurt or itch. I can’t believe it. I would like to ask Prof. Bu to make a good diagnosis. I would like to thank you very much. Is it risky to have surgery? Will there be any after-effects? I think I will have a lopsided mouth and eyes. Can the surgery be done at a county or regional hospital? I would like to ask Prof. Bu to give me a reply in his busy schedule, thank you very much! I have not been treated or taken any medication. Is it a mixed tumor of the parotid gland or a parotitis or some other disease?