[Neonatal intestinal obstruction due to cecal duplication].

Introduction: Cecal duplications are rare, representing 0.4% of all gastrointestinal duplications, with few cases reported in the literature.

Clinical Case: A 48 hours-old newborn presented with bilious vomiting and abdominal distension; the ultrasound revealed a cystic mass in the right abdomen; ileocolic resection was performed with end to end anastomosis. Microscopy confirmed cecal duplication cyst.

Comments: In patients with intestinal obstruction, contrast enema allows differential diagnosis with other colonic pathologies in the newborn; when the cecal duplication cyst is connected to the lumen of the colon, enema reveals a filling defect, and cecal duplication can be suspected. Although cystic lesions are asymptomatic, they should be excised when detected to prevent complications.