Congenital lip pit

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Congenital lip pit
SpecialtyOral & Maxillofacial Surgery
Usual onsetAt birth

A congenital lip pit or lip sinus is a congenital disorder characterized by the presence of pits and possibly associated fistulas in the lips. They are often hereditary, and may occur alone or in association with cleft lip and palate, termed Van der Woude syndrome.[1]



They are divided into three types based on their location:[2]

  • commissural pits, which are small pits near the labial commissure of the mouth,[3]
  • a pit in the upper lip, in which case it may be called a midline sinus of the upper lip,[2] and
  • pits in the lower lip, in which case it may be called a congenital sinus of the lower lip.[2]

In some cases commissural pits have been reported in combination with preauricaluar pits, which are near the ear.[1]


Lip pits do not usually require any treatment, although in some reported cases surgical excision has been used or if associated with a draining sinus tract.[1]


  1. 1.0 1.1 1.2 Rajendran A; Sundaram S (10 February 2014). Shafer's Textbook of Oral Pathology (7th ed.). Elsevier Health Sciences APAC. pp. 16–17. ISBN 978-81-312-3800-4.
  2. 2.0 2.1 2.2 Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 978-1-4160-2999-1.
  3. McKusick, Victor A. (27 May 2009). "Commissural Lip Pits". Online Mendelian Inheritance in Man. Archived from the original on 2023-10-19. Retrieved 2017-05-22.

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