title: Two-year-old with a persistent fetal vein presenting as a neck mass.
authors.affiliation: Department of Otolaryngology and Communication Sciences, Division of Pediatric Otolaryngology, Children's Hospital of Wisconsin, 9000 W Wisconsin Ave, Milwaukee, WI 53201,USA.
authors.forename: D T
authors.initials: DT
authors.lastname: Book
authors.forename: V A
authors.initials: VA
authors.lastname: Flanary
mesh_terms: D002675:Child, Preschool; D003937:Diagnosis, Differential; D006258:Head and Neck Neoplasms / Q000175:diagnosis*; D006801:Humans; D009333:Neck / Q000098:blood supply*; D014680:Veins / Q000002:abnormalities* / Q000196:embryology