First Branchial Cleft Anomalies: Rare Work Type I and Type II Entities

Abstract

First branchial cleft anomalies (FBCAs) are the most infrequent malformations that occur during the development of the branchial apparatus, appearing in less than 8% of all branchial anomalies. Traditionally, they are classified into Work type I and II, depending on their origin. We present a pair of rare FBCAs: a case of a preauricular Work type I cyst with twin fistulae coursing toward the parotid gland and a Work type II cyst of significant dimensions.

Branchial Cleft Anomalies: Embryogenesis, Clinical Features, Diagnosis, and Management

“…These may include EAC cysts, duplications, webbing and atresia, cholesteatoma, otitis media, and otorrhea. [25][26][27][28][29] BCAs typically present unilaterally with slight female predominance. 30 First branchial cleft anomalies often demonstrate a close relationship with the parotid gland and the facial nerve.…”

“…These may include EAC cysts, duplications, webbing and atresia, cholesteatoma, otitis media, and otorrhea. 25-29 BCAs typically present unilaterally with slight female predominance. 30…”