Objective: describe the therapeutic modalities and surgical management of children with giant cystic lymphangioma. Materials and methods: These are two cases of a child with congenital giant cystic lymphangioma, respectively 14 months and 2 years old, treated in the otorhinolaryngology and neck and neck surgery department at the university hospital in rabat. Conclusion: Cervicofacial cystic lymphangiomas are benign tumor malformations of congenital origin. Their pathogenesis remains debated, the centrifugal theory being the most accepted. Their suspected positive diagnosis on clinical examination and medical imaging can only be confirmed by intervention and histological examination of the surgical specimen. Thanks to recent clinical-radiological staging, their management may involve surgery or sclerotherapy, depending on the indication. Without being a neonatal emergency, in general, the intervention must be early and complete, as the tumor is progressive, to ensure complete healing and the absence of recurrence.