Van der Woude syndrome presenting as a single median lower lip pit with associated dental, orofacial and limb deformities: a rare case report

Although it is a rare developmental malformation, van der Woude syndrome is the most common form of syndromic orofacial clefting, accounting for approximately 2% of all cleft cases. The lower lip pits with or without a cleft lip or palate is characteristic of the syndrome. Findings, such as hypodontia, limb deformities, popliteal webs, ankylogossia, ankyloblepheron, and genitourinary and cardiovascular abnormalities, are rarely associated with the syndrome. This paper reports a rare case of van der Woude syndrome in a 10-year-old male patient with a single median lower lip pit and a repaired bilateral cleft lip and cleft palate that were associated with microstomia, hypodontia, and clubbing of the left foot with syndactyly of the second to fifth lesser toes of the same foot.