Surgery A newborn has a swelling in neck due to soft cystic mass with trans-illumination test positive. Diagnosis is? A Potato tumor B Branchial cyst C Cystic hygroma D Carotid body tumor 💡 Explanation A newborn has a swelling in neck due to soft cystic mass with trans-illumination test positive. Diagnosis is? ✓ Correct Answer: C. Cystic hygroma