Skin nonmelanocytic tumor

Other tumors of skin

Benign (mature) cystic teratoma

Last author update: 1 November 2016
Last staff update: 26 April 2023

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PubMed search: benign (mature) cystic teratoma skin

Hillary Rose Elwood, M.D.
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Cite this page: Elwood H. Benign (mature) cystic teratoma. website. Accessed October 2nd, 2023.
Definition / general
  • Congenital tumor (extremely rare in skin) containing tissue components from all 3 germinal layers
Clinical features
  • Very rare with only scattered case reports
  • Lesions present at birth
  • Locations vary including face, back, neck, knee
Case reports
Microscopic (histologic) description
  • Cystic structure with elements from all 3 germinal layers (ectoderm, endoderm and mesoderm)
  • Variable tissue types may be present from the germinal layers:
    • Superficial ectoderm such as epidermis and appendages
    • Neuroectoderm (nervous tissue)
    • Mesoderm such as connective tissue, striated and smooth muscle
    • Endoderm such as respiratory epithelium, thyroid tissue, GI mucosa
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