Congenital lip pit

Congenital lip pits (also known as "Congenital sinus of the lower lip," "Lip sinus," and "Midline sinus of the upper lip") 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.