J Korean Soc Plast Reconstr Surg.
2000 Sep;27(5):565-566.
Congenital Midline Sinus of the Upper Lip
- Affiliations
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- 1Department of Plastic & Reconstructive Surgery, School of Medicine, Ajou University, Suwon, Korea.
Abstract
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Congenital sinuses of the upper lip are extremely rare anomaly. Only 17 cases have been reported in English literature. They were described as a pit which was the opening of a blind sinus, sometimes penetrated the orbicularis oris muscle, but had no connection with the oral cavity. The pit was reportedly located in a lateral or midline area. There are a few theories regarding the etiology of this rare anomaly, but the exact cause still remains obscure. We report a 4-year-old boy with congenital midline sinus of the upper lip. The sinus had a pit-like opening in the midline philtral area with a duct extending into 14 mm posteroinferiorly. It was excised by extraoral elliptical excision. Histopathological examination showed that duct was covered with stratified squamous epithelium.