MEDIAN NASAL DERMOID FISTULA
By Gary M. White, MD
The median nasal dermoid fistula (MNDF) is a tract connecting the surface of the nose with an underlying dermoid cyst.
- The fistula communicates with a dermoid cyst which usually occurs posterior to the nasal bones but may also occur in the nasal septum, ethmoid or sphenoid bones, or attached to the dura.
A midline pit or fistula, often with hairs emanating from it, on the dorsum of the nose is characteristic. Sebaceous material may emanate spontaneously or upon compression. A firm, painless swelling may be noted anywhere from the glabella to the tip of the nose. Intermittent drainage, abscess formation, meningitis or osteomyelitis may occur. See also dermoid cyst.
Because these congenital defects potentially have intracranial extension, imaging is necessary. Typically a computed tomography scan or magnetic resonance imaging is recommended.
Surgical excision is recommended by a trained specialist able to remove the entire lesion.
This lesion is off center, presenting on the eyelid.
Homepage | FAQs | Use of Images | Contact Dr. White
It is not the intention of RegionalDerm.com to provide specific medical advice, diagnosis or treatment. RegionalDerm.com only intends to provide users with information regarding various medical conditions for educational purposes and will not provide specific medical advice. Information on RegionalDerm.com is not intended as a substitute for seeking medical treatment and you should always seek the advice of a qualified healthcare provider for diagnosis and for answers to your individual questions. Information contained on RegionalDerm.com should never cause you to disregard professional medical advice or delay seeking treatment. If you live in the United States and believe you are having a medical emergency call 911 immediately.