Cervical foregut duplication cyst: A rare neck mass

Objective: To describe clinical, radiologic, and histological features of a foregut duplication cyst extending from the oropharynx to the thoracic inlet. Methods: The medical record of one-month-old female who was referred to a tertiary care pediatric hospital for assessment of a neck mass was reviewed. Data included relevant history and physical examination, diagnostic work up, and management. Results: The child presented with a left neck mass identified during prenatal ultrasound exam. The infant gradually developed choking, gagging, and noisy breathing with feeds. Physical examination revealed a neck mass, extending from left submandibular region to left clavicle, was well-marginated, painless, soft, immobile, and nonadherent to the skin. A computerized tomography of the neck demonstrated a unilocular cystic mass extending from the level of the posterior oropharyngeal airway to the thoracic inlet. The mass was excised and histopathologic diagnosis was foregut duplication cyst. Conclusion: Foregut duplication cyst, although uncommon in the neck region, should be considered in the differential diagnosis of neck mass in children.