Patient's question:
Ear canal fistula excision surgeryDoctor's answer:
General anesthesia surgery usually costs around 1,000 yuan. Congenital preauricular fistula is a common ear disease. It is caused by the poor fusion of small hill-like nodules formed during the first and second pharyngeal arches in the embryonic period, or incomplete closure of the first pharyngeal groove. A fistula is a blind tube that can be branched and curved, with its external opening usually located above and in front of the helix crus. The lumen is lined with stratified squamous epithelium, and the cavity contains squames. Squeezing the surrounding fistula may occasionally cause a small amount of viscous sebaceous gland-like material to ooze out from the fistula opening. Once infected, it becomes red, swollen, painful, and purulent, and can recur repeatedly. This disease is an autosomal dominant genetic disorder with incomplete penetrance. Those without symptoms do not require treatment. Infection of congenital preauricular fistula requires anti-infection treatment, abscess formation requires incision and drainage, and after healing, the fistula needs to be surgically excised.