| Discussion: |
-Congenital cystic lesions of the neck include: branchial cleft cyst, cystic lymphangioma, necrotic inflammatory lymphadenopathy, thymic cyst, parathyroid cyst, dermoid cyst (cystic teratoma), ectopic bronchogenic cyst
-Branchial cleft cysts arise in the parotid space near the mandibular angle and parapharyngeal space. May displace the sternocleidomastoid muscle posteriorly, the carotid artery and jugular vein posteromedially, and the submandibular gland anteriorly. Pathognomic if insinuates between the internal and external carotid artery.