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2026, Number 1

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Dermatología Cosmética, Médica y Quirúrgica 2026; 24 (1)

Trichoscopic findings of nevus sebaceous of Jadassohn across the lifespan

Carreño SSA, Vázquez RLA, Flores NKM, López YBA

Language: Spanish
References: 22
Page: 23-28
PDF size: 292.79 Kb.


ABSTRACT

BACKGROUND: The sebaceous nevus of Jadassohn (NSJ) is an uncommon congenital cutaneous hamartoma that affects the skin, including hair follicles, sebaceous and apocrine glands. It presents three well-defined evolutionary clinical stages, with variable morphology according to age. It is associated with the development of benign neoplasms in 10-20% of cases and malignant neoplasms in less than 3%, predominantly in adults. METHODOLOGY: A series of three representative clinical cases, one per evolutionary stage, describing the corresponding trichoscopic features in each phase. The aim is to provide practical and updated information to facilitate lifelong follow-up of NSJ. RESULTS: Characteristic trichoscopic findings in the different evolutionary stages of NSJ: a 2-month-old girl with bright yellow globules on a homogeneous yellow background; a 12-year-old girl with brown-orange globules in a cobblestone pattern; a 23-year-old man with yellow-brown globules and grooves in a cerebriform pattern. CONCLUSIONS: Given the low risk of malignancy primarily in children and young adults, follow-up through close periodic clinical surveillance is recommended, supported by trichoscopy, reserving invasive procedures only in the presence of trichoscopic warning signs.


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