A<unk><unk>  or<unk>  (also known as a "Congenital auricular fistula," "Congenital<unk>  fistula," "Ear pit":782, and<unk> <unk> "
) is a common congenital malformation characterized by a nodule, dent or dimple located anywhere adjacent to the external ear. They are inherited features and usually appear on one side, but may be bilateral in 25-50% of cases.<unk><unk> es and<unk> s result from developmental defects of the first and second branchial arches. Occasionally a<unk><unk>  or a<unk>  can become infected. This and other congenital ear malformations are associated with renal anomalies.
Most<unk><unk> es are asymptomatic and remain untreated unless they become infected too often.<unk> <unk> s are treated with surgery which, because of their close proximity to the facial nerve should be left to an experienced surgeon, such as an otolaryngologist - head and neck surgeon.
In rare cases they may be associated with branchio-oto-renal syndrome.
Preauricular sinus and cyst
Prosector's wart
Enamel pearl
Swimmer's ear
Nasal bone fracture
Cyclops lesion
Nasal fracture
Subungual hematoma