Illing H M, Field D, McNamara C M, Sandy J R
Maxillofacial Unit, Queen Alexandra Hospital, Cosham, Portsmouth, UK.
Int J Oral Maxillofac Surg. 1999 Feb;28(1):29-30.
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.