This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pediatrics
A neonate with doughy soft lump in neck causing distortion of face and audible grunt. Diagnosis is: 
Select and explain. 
A. Cystic hygroma, B. Brachial cyst, C. Sternocleidomastoid Tumor, D. Birth injury
A: Cystic hygroma
Answer: A: Cystic hygroma 
Explanation: Ans. (a) Cystic hygroma.* Cystic hygroma is a form of Lymphangioma caused by benign aberrant development of lymphatics and presents at birth with airway obstruction.* Imaging with USG, CT scan or MRI can identify the extent of lesion and surgery is required. (EXIT Procedure). Doxycycline, ethanol and sildenafil are Sclerosants and sclerotherapy can be done.* Sternocleidomastoid tumor is seen after a traumatic birth and leads to lump in neck with torticollis.* Brachial cyst is small and located on anterior border of sternocleidomastoid and does not cause respiratory compromise.Image source. style="font-size: 1.04761904761905em; color: rgba(0, 0, 0, 1); font-family: Times New Roman, Times, serif; margin: 0">