A<unk>  is an oval, moderately movable cystic mass that develops under the skin in the neck between the sternocleidomastoid muscle and the pharynx. It is a remnant of embryonic development and results from a failure of obliteration of the second<unk><unk> . Most<unk> s are asymptomatic, but they may become infected. Treatment, when necessary, consists of surgical excision of the cyst. Recurrence is rare.
Branchial cleft cyst
Thyroglossal cyst
Nasopalatine cyst
Colloid cyst
Choroidal fissure cyst
Odontoma
Thanatophoric dysplasia
Ganglion cyst