Congenital sinus of the upper lip. A case report

Abstract

A case report of a congenital midline sinus in the upper lip of a 13-year-old girl is presented. Theories proposed regarding the aetiology of this rare anomaly are discussed.

Congenital Lateral Upper Lip Sinus: A Rare Case

“…This may be due to some type of dynamic contracture along the length of the sinus. This fact has been emphasized by Illing et al [16] in their review of midline sinuses.…”

“…Apoptosis has been suggested as a mechanism to account for the fate of these cells [16], however it has been postulated that the epithelial cells persist within the mesenchyme and lead to formation of sinuses by a process known as epithelial mesenchymal transformation [17,18].…”

“…Congenital lateral lip sinus is a rare malformation, with less than 15 reported cases in English literature [1][2][3], presenting as a lip pit adjacent to white roll of the lip. The sinus tract extends into the mucosa with no intra oral communication.…”

Fistule congénitale médiane de la lèvre supérieure associée à un syndrome de Goldenhar : à propos d’un cas

“…Le trajet de la fistule était atypique : elle suivait un trajet à travers la voûte palatine antérieure en direction du rail vomérien, à la base de la cloison et s'étendait en arrière jusqu'à l'orifice des choanes. Ce trajet atypique pourrait être expliqué par une autre hypothèse : la fistule pourrait être le résultat d'une aberration épithéliale au sommet du bourgeon facial : des cellules épithéliales pourraient rester isolées sans le mésenchyme après une erreur de migration et ainsi former une fistule ou une fente labio-palatine [13]. …”

Congenital Isolated Midline Sinus of the Upper Lip: Clinical and Embryological Approaches

“…We performed a combined intraoral approach because of the strong adherence of the blind fistula to the vestibular mucosa. If the patient or the family does not express symptoms or concerns, no further treatment is required (Illing et al, 1999).…”