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Nevus sebaceus in Child
See also in: Hair and Scalp
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Nevus sebaceus in Child

See also in: Hair and Scalp
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Contributors: Lauren Ko, Belinda Tan MD, PhD, Susan Burgin MD
Other Resources UpToDate PubMed

Synopsis

Nevus sebaceus (of Jadassohn) is a congenital growth that usually presents at birth or develops in early childhood. It is typically found on the scalp, and less frequently on the face and neck. Considered a form of epidermal nevus, nevus sebaceus presents as a hairless lesion that persists indefinitely. Most lesions are sporadic. There is no predilection for either sex or any ethnicity.

Numerous benign neoplasms may arise within nevus sebaceus, most commonly after adolescence. Trichoblastomas are the most frequent benign tumors arising within nevus sebaceous, followed by syringocystadenoma papilliferum. Basal cell cancer is the commonest malignancy. Traditionally, the lifetime risk of malignant transformation (to basal cell carcinoma, squamous cell carcinoma, sebaceous carcinoma, etc) was estimated at 5%-15%, although more recent evidence indicates that this is an overestimation.

In cases with a large plaque or multiple plaques, a diagnosis of nevus sebaceus syndrome may be considered. This condition may manifest with neurologic, ocular, and musculoskeletal abnormalities.

Codes

ICD10CM:
Q85.9 – Phakomatosis, unspecified

SNOMEDCT:
707136009 – Nevus sebaceous

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Last Reviewed: 05/25/2017
Last Updated: 05/25/2017
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Nevus sebaceus in Child
See also in: Hair and Scalp
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Nevus sebaceus : Present at birth, Verrucous scaly plaque
Clinical image of Nevus sebaceus
A light brown and yellowish cobblestone plaque with a linear configuration on the lateral cheek.
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