<prompt> Treatment of choice for cystic hygroma isPercutaneous aspirationIntralesional sclerosant injectionEn-bloc resectionSurgical excision  <response>: Definitive treatment for Cystic hygroma is complete excision of the cyst at an early stage if possible. Injection of a sclerosing agent is an alternative strategy and may reduce the size of the cyst, however they are usually multicystic and therefore complete resolution is a challenge. Reference : Bailey Love, 27th Edition, page no 754. 