Cystic hygroma (CH) is a congenital entity which occurs due to failure in development of communication between lymphatic and venous system. The incidence of CH is approximately 1 in 6000 live births.

CH is considered as a developmental tumor of lymphatic origin and is a relatively rare lesion. CH often presents as a swelling in head/neck region accounting for 70-80%, other sites includes mediastinum, axilla, pelvis. Its treatment modalities comprise surgical excision, use of sclerosants, repeated aspiration, conservative management.