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Congenital midline sinus of the upper lip. Report of a case
1First Department of Oral Surgery, Tohoku University School of Dentistry, Sendai, Japan.
International Journal of Oral and Maxillofacial Surgery
|August 1, 1989
Abstract:
An extremely rare case of congenital midline sinus of the upper lip in a 12-year-old girl is presented. The sinus had a pit-like orifice in the midline philtral area with a duct extending 4 mm posterosuperiorly. It was excised by extraoral elliptical incision. Histopathological examination disclosed that the duct was covered by a stratified squamous epithelium with sebaceous glands. Twelve cases of this rare disease have previously been reported.