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
[{'content': 'All of the following are true about cystic hygroma except: \nSelect and explain. \nA. These are Multiloculated cysts lined with endothelium, B. Transillumination positive, C. Posterior neck region is more commonly involved, D. Sistrunk incision is used for surgical excision', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sistrunk incision is used in Parotidectomy.', 'role': 'assistant'}]