This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
The best treatment for cystic hygroma is - 
Select and explain. 
A. Surgical excision, B. Radiotherapy, C. Sclerotherapy, D. Chemotherapy
A: Surgical excision
Answer: A: Surgical excision 
Explanation: Definitive treatment is complete excision of the cyst at an early age.