Résumé
Bronchogenic cyst has been recognized as remnants of foregut which abnormally were developed tracheobronchial tree during embryonic period. The anomaly was found in the lung or mediastinum but rarely in the neck. Histologic diagnosis can be made by the identification of the airway tissue lined by ciliated pseudostratified columnar or cuboid epithelium. A 4-year-old patient was admitted due to increase in the size of right neck mass which was incidentally found 2 years ago. In anterior triangle of neck, soft, non-tender and movable mass was presented in right lymph node measured by 1.2X0.7 cm in size. On admission, soft and non-tender mass was palpated at the right neck between right thyroid gland and right sternocleidomastoid muscle measured by 2.0x1.0 cm in size. After the excisional operation, histopathologic examination revealed the smooth muscle and muco-serous gland lined by ciliated pseudostratified columnar epithelium, and was diagnosed of bronchogenic cyst surrounded by enlarged lymph nodes which were reflecting reactive hyperplasia. We are reporting a case of bronchogenic cyst presenting as neck mass with brief review of the literature.