Dermoid cysts
A dermoid cyst is a pocket or cavity under the skin that
contains tissues normally present in the outer layers of the skin. The pocket
forms a mass that is sometimes visible at birth or in early infancy but often is
not seen until later years. Dermoid cysts are usually found on the head or neck,
and sometimes on the face.
What causes a dermoid cyst?
A dermoid cyst is a congenital defect (present from
birth) that occurs during embryonic development when the skin layers do not
properly grow together. A dermoid cyst is lined with epithelium, which contains
tissues and cells normally present in skin layers, including hair follicles,
sebaceous (skin oil), and sweat glands. These glands and tissues secrete their
normal substances which collect inside the cyst, causing it to grow and enlarge.
The symptoms
Each child may experience symptoms differently. Symptoms
may include a small, often painless, lump in the mid-line of the neck (in which
the skin over the lump can easily be moved). The lump may be skin-colored, or
may have a slight yellow tinge.
The symptoms of a dermoid cyst may resemble other neck masses or medical
problems. Always consult your child's physician for a diagnosis.