“…The differential diagnosis comprises other malformations such as branchial cleft cysts, thyroglossal duct cysts, cystic teratomas, cystic hygromas, lymphangiomas, epidermal and dermoid cysts, laryngoceles, ranulas, oesophageal duplication cysts and tracheal diverticula. Furthermore, it includes thymic and thyroid cysts, lipomas, parathyroid cysts, cystic neuromas, cystic papillary carcinoma of the thyroid gland and cystic degeneration of a lymph node [1,3,5,6,[8], [9], [10], [11], [12],15,16,21].…”