<prompt> A 36-year-old lady presents with a 20 yrs duration fluctuant and translucent swelling on right side of her neck. No other history available. No other findings on examination of neck. What is the most probable diagnosis?Lymph cystLymph nodeColloid noduleCold abscess  <response>: The only swelling among the 4 options which will show translucency is Lymph cyst. 