<unk>  or cervico-aural fistula is a type of fistula whose openings are at external auditory canal and the neck, usually in the upper part of anterior border of sternocleidomastoid muscle. It occurs at birth because the defect is in the embryological branchial cleft. It is rare, and accounts for 8% of the branchial cleft anomalies, which is why it is sometimes misdiagnosed.
Collaural fistula
Cimino fistula
Urachal fistula
Vaginitis emphysematosa
Urachal diverticulum
Galactocele
Chirurgia magna
Urachal cyst