Introduction and importance: Congenital hypopharynx duplication cysts are a medical rarity; nevertheless, they offer an important differential diagnosis in neonatal dyspnea or feeding problems.
Case report: Herein, we describe a case of delayed diagnosis but successful surgical removal of a large congenital hypopharynx cyst in a 4-month-old infant presenting with stridor.
Clinical discussion: Early and proper diagnosis and surgical handling of hypopharynx cyst can help to achieve the best prognosis and outcome.
Conclusion: We present the successful management of a newborn with a pharyngeal duplication cyst. In our case, the temporary postoperative laryngeal nerve palsy resolved within four weeks. Overstretching of recurrent laryngeal nerve might have caused this complication.
Keywords: Case report; Duplication cyst; Hypopharynx; Recurrent laryngeal nerve palsy; Stridor in infants.
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