A preauricular sinus (also known as a congenital auricular fistula, a congenital preauricular fistula, an ear pit, or a preauricular cyst) is a common congenital malformation characterized by a nodule, dent or dimple located anywhere adjacent to the external ear. Frequency of preauricular sinus differs depending on race, 0.1-9% in the US, 0.9% in the UK, and 4-10% in Asia and parts of Africa. Frequency is known to be higher in Africans and Asians compared to caucasians.