Fourth Branchial Cleft Cyst

  • Etiology: remnant of embryonal branchial arch incompletely obliterated, courses from apex of pyriform sinus to lower anterior neck / thyroid
  • Imaging: look from pyriform sinus to left thyroid
  • Clinical: 2% of branchial cleft cysts, presents with recurrent supprative thyroiditis / abscess

Cases of Fourth Branchial Cleft Cyst