[Large macrocystic lymphatic malformation in a newborn]

Macrocystic lymphatic malformations are rare congenital anomalies that vary in size and morphology. Complications include airway obstruction, feeding problems, bleeding and infection. Treatment options include surgery, sclerotherapy, medication and conservative management. This case report describes a newborn girl with a large cystic neck malformation. No immediate complications occurred, and she was observed and fed via nasogastric tube. After a multidisciplinary review, a conservative approach was chosen, and the malformation regressed completely within two months.