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Epidermal Inclusion Cyst versus Thyroglossal Duct Cyst: Sistrunk or Not?

Epidermal inclusion cyst (EIC) is a recognized cause of an anterior neck mass in children. Controversy exists as to the proper surgical management of an anterior neck EIC: is simple excision adequate treatment, or is a Sistrunk procedure necessary? A retrospective review of the operative logs of the two senior authors (M.M.A., R.F.W.) from 1993 to the present revealed 16 children, ages 6 months to 9 years (mean, 4.5 years), with a diagnosis of anterior neck EIC. An accurate intraoperative diagnosis of an EIC in all cases allowed for a simple excision of the mass rather than a Sistrunk procedure. The final histologic diagnosis was EIC in all 16 patients. Follow-up of these 16 patients for a mean of 4.5 years revealed no recurrences or complications. When the diagnosis of EIC can be made confidently in the operating room, simple excision is an adequate surgical treatment.