완전 경부 새루(鰓瘻)의 1례

Branchial anomalies are observed any time from birth to old age. Sinuses, cysts, fistulae and cartilaginous nest are their most common manifestation, the sinuses and fistulae are usually noted during infant and young childhood. In contrast, cysts require more time to produce palpable masses，and often are not diagnosed until later childhood.

Authors report a case of complete branchial fistula with an outer and inner opening in a nine-year-old boy. External examination revealed a very small and inconspicous opening situating on the anterior border of the right sternocleidomastoid muscle at the level of lower one third of the neck，and small amount of mucous discharge from the opening was noticed. Fistu-logram using contrast media through the opening demonstrates a distinct fistulous tract extending all the way up to the region of the supratonsillar fossa.

The fistula was extirpated completely by stepladder technique, and the diagosis was confirmed by histopathological study.