Macrostomia

**Definition:** Greatly exaggerated width of the mouth, resulting from failure of union of the maxillary and mandibular processes, with extension of the oral orifice toward the ear. The defect may be unilateral or bilateral. (Dorland, 27th ed)

**Tree numbers:** - C07.465.525.480 - C07.650.525.480 - C16.131.850.525.480