This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Salivary Gland, Subject name: Surgery
Seabrook's operation is done for: 
Select and explain. 
A. Parotid duct fistula, B. Thyroglossal fistula, C. Thyroglossal cyst, D. Branchial fistula
A: Parotid duct fistula
Answer: A: Parotid duct fistula 
Explanation: Ans. (a) Parotid duct fistulaRef: SRB 4th edition Page 438Causes of Parotid Fistula:* Rupture of parotid abscess* Incision and Drainage of Parotid abscess by an inadvertent incision* Penetrating trauma* After Superficial Parotidectomy.Based on the External opening the symptoms happen:* External fistula is arising from gland - it closes spontaneously* External fistula is arising from Duct - it produces outpouring of saliva and won't heal.Diagnosis: SialographyTreatment: Newman and Seabrook's operation-reconstruction of duct