- Etiology:
— Remnant of embryonal branchial arch incompletely obliterated
— Thymopharyngeal duct origin
— Courses from hypopharynx to supraclavicular region in upper posterior cervical space - Imaging: Look in posterior triangle, mandibular angle, mediastinum
- DDX:
- Complications: Infection
- Treatment:
- Clinical:
— 2% of branchial cleft cysts
— Presents with thymic cyst
— With unexplained abscess in the neck look for branchial cleft anomaly