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Cutaneous dermoid cyst in Adult
Other Resources UpToDate PubMed

Cutaneous dermoid cyst in Adult

Contributors: Erin X. Wei MD, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

A cutaneous dermoid cyst results from an alteration in fetal development at the lines of cleavage and is postulated to result from entrapped ectodermal cells during embryonic development. The cyst contains a keratinizing epithelial lining, sebaceous glands, eccrine glands, and sometimes lanugo hair. Dermoid cysts may be cutaneous or deeper. Cutaneous dermoid cysts are typically seen at birth or noticed shortly thereafter. They are typically found on the head. They may have intracranial connections; thus, biopsy and removal should be done by an appropriate surgeon to avoid neurological complications, such as central nervous system (CNS) infection that could lead to frontal lobe abscess, meningoencephalitis, or seizures.

Non-cutaneous dermoid cysts can be found inside the skull, spine, and reproductive organs.

Codes

ICD10CM:
D23.9 – Other benign neoplasm of skin, unspecified

SNOMEDCT:
201325006 – Dermoid cyst of skin

Look For

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Diagnostic Pearls

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Differential Diagnosis & Pitfalls

  • Encephalocele – can also be found in the glabella area where dermoid cysts can be found; typically transilluminate, compressible / soft, and bluish in color
  • Nasal glial heterotopia – can also be found in the glabella area; typically a firm nodule that is uncompressible and red
  • Epidermoid cyst / Epidermoid cyst – dermoid cysts lack the overlying punctum seen in epidermoid cysts but may have an ostium
  • Pilar cyst are firm and well circumscribed on palpation
  • Pilomatricoma
  • Nasolacrimal duct obstruction
  • Infantile hemangioma – compressible, red / purple, and follows typical growth pattern
  • Hemangiopericytoma – typically inside the brain, but occasionally found on the head / neck, extremities, pelvic area
  • Solitary neurofibroma
  • Melanotic neuroectodermal tumor of infancy
  • Mesenchymal hamartomas (eg, Lipoma, chondromesenchymal hamartoma)
  • Teratoma
  • Deep vascular lesion
  • Sarcoma (Rhabdomyosarcoma, Fibrosarcoma, Osteosarcoma) and Neuroblastoma can present during infancy in rare cases

Best Tests

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Management Pearls

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Therapy

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References

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Last Reviewed:07/28/2021
Last Updated:08/05/2021
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Cutaneous dermoid cyst in Adult
A medical illustration showing key findings of Cutaneous dermoid cyst : Eye, Eyebrow, Forehead, Neck, Nose, Scalp, Smooth nodule, Tumor
Clinical image of Cutaneous dermoid cyst - imageId=1501635. Click to open in gallery.  caption: 'A shiny, hairless, pink nodule on the scalp.'
A shiny, hairless, pink nodule on the scalp.
Copyright © 2024 VisualDx®. All rights reserved.