sebaceous nevus
Pronunciation: seh-BAY-shus NEE-vus
A congenital hamartoma of sebaceous glands typically appearing as a hairless, yellow-orange plaque on the scalp or face.
Full Definition
Sebaceous nevus, also known as nevus sebaceus of Jadassohn, is a congenital hamartoma composed of sebaceous glands, hair follicles, and apocrine glands. These lesions typically appear as well-demarcated, hairless, yellow to orange plaques most commonly located on the scalp or face. In pediatric dermatology, these lesions undergo characteristic changes through different life stages, becoming more prominent during puberty due to hormonal influences. Documentation should include size, location, and any surface changes, as these lesions carry a small risk of secondary neoplasm development, historically overestimated but still warranting monitoring.
Usage
Usage note: The malignant transformation risk is lower than historically reported. Use current evidence-based recommendations for management.
In Context
- "The sebaceous nevus on the vertex scalp showed typical yellow coloration and absence of hair." — dermatology consultation note
- "Prophylactic excision of the sebaceous nevus was recommended given the family's preference for removal." — surgical consultation documentation