Patient: description of the disease (onset time, main symptoms, hospital, etc.): the patient female 43 years old, born 6 months under the right ear grew two boils 6 centimeters apart (in winter), when the countryside local doctors with wire will be connected to the two boils connected to the head of the series of nine chapters into the pipeline, the flow of pus every month a little pus lasted twenty years of seizures until 2001, 2003, respectively, the second People’s Hospital of Hefei City, Anhui Province, the operation is ineffective, the long seizures. The fistula was removed in two surgeries. Had two surgeries only to remove the fistula, failed to get rid of the root, the last seven years often swollen from under the earlobe in the line of pus, and long into a fistula, longing for a radical cure. Xu Chengzhi: may be the first parotid fistula, all fistulas need to be removed completely, otherwise it must recur, repeated surgery will increase the difficulty of the root cause, because of scarring affects the doctor to determine the direction of the fistula, but the only way to cure the root cause of the fistula is to operate, you can use contrast dye to determine the direction of the fistula and then consider the surgical plan. I wish you good health! Patient: Dear Dr. Xu Chengzhi, hello, how I hope to get your treatment, I decided to go to your hospital tomorrow morning, I do not know how to find you, can you give me your phone number? I am now in Kunshan, Jiangsu Province. Xu Chengzhi: Tomorrow, I will be in the ward (3rd floor of No.5 building) before 9:00 a.m., and after 9:00 a.m., you can see the outpatient clinic with our director and look for me (before 9:00 a.m.), or you can come to the ward after 3:00 p.m. to look for me. Patient: Dear Dr. Xu, hello, I know how to find you tomorrow. Thank you. Xu Chengzhi: You are welcome, wish you good health!