| 1 | IV. They present a propulsive tail, pharynx and branchial openings. | |
| 2 | The second branchial fistula and thyroglossal fistula are relatively common lesions. | |
| 3 | Bilateral branchial cleft fistulas are uncommon, but the incidence is higher in the same family. | |
| 4 | Most of the thyroglossal duct cyst and branchial cleft cyst were monolocular, while lymphangioma was multilocular. | |
| 5 | Conclusion The dissection of facial nerve is useful to completely remove the first branchial fistula and prevent permanent injury of facial nerve. |
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