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
Tumor appears at the earliest after birth. 
Select and explain. 
A. Cystic hygroma, B. Branchial cyst, C. Lymphoma, D. Sternomastoid tumor
A: Cystic hygroma
Answer: A: Cystic hygroma 
Explanation: Ans. (a) Cystic hygromaRef: Bailey and Love 26th edition, Page700* Earliest swelling one can note in human beings in Cystic Hygroma.* It can present as obstructed labor