This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neck, Subject name: Surgery
Treatment of choice for cystic hygroma:- 
Select and explain. 
A. Percutaneous aspiration, B. Intralesional sclerosant injection, C. En-bloc resection, D. Surgical excision
D: Surgical excision
Answer: D: Surgical excision 
Explanation: Treatment of choice for cystic hygroma is surgical excision. IOC for diagnosis: MRIQ(MRI play a crucial role in preoperative planningQ) TREATMENT Complete surgical excision is the preferred treatmentQ. Injection of sclerosing agentsQsuch as bleomycin or OK-432 (Picibanil), derived from Streptococcus pyogenes may eradicate the cystic hygroma