Submental pilonidal sinus-the first reported case

Introduction: Pilonidal sinus (PNS) usually affects the sacrococcygeal region. To our knowledge, there is no reported case of submental PNS. The aim of this paper is to report possibly the first case of submental PNS.Methods: Case report.Results: A 22 year old female presented with a submental mass for 7 years which proved to be a diagnostic challenge.

From the sonographic point of view, it was diagnosed as a dermoid cyst, clinically diagnosed as a thyroglossal cyst while histopathological examination suggested the diagnosis of PNS.Conclusion: Submental PNS could occur and present with diagnostic challenge. Complete resection with direct closure was performed.