title: Fourth branchial anomaly presenting with a lateral neck mass in a neonate.
abstract: Branchial cleft anomalies are an important differential diagnosis in congenital neck masses in infants. The third and fourth branchial anomalies are rare branchial cleft anomalies, which are hard to differentiate. We report here an uncommon case of the fourth branchial anomaly that was presented as an asymptomatic neck mass in a neonate.
authors.affiliation: Department of Pediatric Surgery, Seoul National University Children's Hospital, Seoul, Korea.
authors.forename: Tae-Kyung
authors.initials: TK
authors.lastname: Yoo
authors.affiliation: Department of Pediatric Surgery, Pusan National University Children's Hospital, Yangsan, Korea.
authors.forename: Soo-Hong
authors.initials: SH
authors.lastname: Kim
authors.affiliation: Department of Pediatric Surgery, Seoul National University Children's Hospital, Seoul, Korea.
authors.forename: Ha-Shin
authors.initials: HS
authors.lastname: Kim
authors.affiliation: Department of Pediatric Surgery, Seoul National University Children's Hospital, Seoul, Korea.
authors.forename: Hyun-Young
authors.initials: HY
authors.lastname: Kim
authors.affiliation: Department of Pediatric Surgery, Seoul National University Children's Hospital, Seoul, Korea.
authors.forename: Kwi-Won
authors.initials: KW
authors.lastname: Park
keywords: Branchial cleft anomalies; Neonate