A Neonatal Case of Communicating Cervical Esophageal Duplication Cyst

Esophageal duplication cysts are rare congenital anomalies of the gastrointestinal tract, most frequently located in the thoracic esophagus, with cervical involvement being exceedingly uncommon. Diagnosis and management of these lesions, especially when presenting with atypical imaging features such as an air-fluid level, can be challenging. We report the case of a 21-day-old male neonate, admitted for evaluation of a left cervical swelling. Ultrasound and CT imaging revealed a left basi-cervical cystic lesion with internal air-fluid level, intimately related to the esophagus. A digestive contrast study demonstrated opacification of the cyst during contrast passage along the esophagus, confirming a communicating esophageal duplication cyst. The patient remained asymptomatic despite the lesion's size and location.