Case 45 - Discussion

Uploaded: 2007-07-06, Updated: 2007-07-06



  Dermoid Cyst
  • Dermoid cysts on the face, neck, or scalp are subcutaneous cysts that are usually present at birth. Intracranial or perispinal dermoid cysts are most often found in infants, children, or young adolescents.

  • In contrast to epidermal cysts, dermoid cysts in the skin are lined by an epidermis that possesses various epidermal appendages. As a rule, these appendages are fully mature. Hair follicles containing hairs that project into the lumen of the cyst are often present. The dermis of dermoid cysts usually contains sebaceous glands; eccrine glands; and, in many patients, apocrine glands. Occasionally, the lining epithelium may proliferate as papillary boundaries extend externally or inward toward the lumen of the cyst. This proliferation may have some superficial resemblance to epidermal carcinomatous proliferation, and the growth may be misclassified as a cancer.