Congenitalcervical anomalies are important to consider in the differential of head and neck masses in children and adults. These lesions can present as palpable cystic masses, infected masses, draining sinuses, or fistulae.
Dermoid cysts are uncommon clinicopathological lesions of developmental origin. Their etiology is not yet clear and can be associated with entrapment of ectodermal and mesodermal components when the 1st and 2nd branchial arches of each side fuse in the midline. The entrapped tissues then undergo proliferation and cystic transformation.