A<unk>  or<unk>  sinus is a<unk>  disorder characterized by the presence of<unk> s and possibly associated fistulas in the<unk> s. They are often hereditary, and may occur alone or in association with cleft<unk>  and palate, termed Van der Woude syndrome.
Congenital lip pit
Branchial cleft cyst
Linitis plastica
Pachydermoperiostosis
Epiblepharon
Torus palatinus
Nasolabial cyst
Sponastrime dysplasia