Children can be born with, or can develop, a wide variety of problems of the head and neck which require surgery. Most are left-overs of early embryologic development. These include cysts of the head and neck, and tracts from the inside to the skin. The most common sites for cysts are the midline of the neck (thyroglossal duct cyst); the side of the neck and front of the ear (branchial cysts and sinus tracts); the corner of the eyebrow, behind the ear, and underneath the scalp (epidermoid cysts). All can grow in size, producing a cosmetic problem, and all can become infected, leading to an abscess. The recommendation is always to have the cyst removed - before it enlarges or complications develop.