Abstract：
Congenital midline sinus of the upper lip are rare congenital malformations. We recently identified a case featuring a congenital midline sinus of the upper lip. The punctate opening was positioned at the midline of the philtrum, immediately below the base of the columella. Surgical removal of the sinus tract was conducted through an intraoral approach. Up to now, fewer than 70 cases have been reported. Several postulates, including the fusion theory, merging theory, and invagination theory, have been proposed to explain the formation of the congenital midline sinus of the upper lip. Nevertheless, the etiology of this uncommon abnormality remains unclear. This report details a case of a congenital upper lip sinus presenting as a congenital midline sinus of the upper lip and reviews the current literature on this condition.
摘要：
先天性上唇中线窦是罕见的先天性畸形。我们最近发现了一例先天性上唇中线窦。点状开口位于腓骨的中线，就在小柱底部的正下方.通过口内入路进行窦道的手术切除。到目前为止,报告的病例不到70例。几个假设，包括融合理论，合并理论，和内化理论，已提出解释先天性上唇中线窦的形成。然而，这种罕见异常的病因尚不清楚.本报告详细介绍了一例先天性上唇窦，表现为上唇的先天性中线窦，并回顾了有关这种情况的最新文献。
