Nevus Sebaceous of Jadassohn

Sebaceous Carcinoma, Basal Cell Carcinoma, Trichoadenoma, Trichoblastoma, and Syringocystadenoma Papilliferum Arising within a Nevus Sebaceus

“…NEVUS SEBACEUS is a cutaneous hamartoma that has a well-documented potential to develop a variety of benign and, less commonly, malignant neoplasms of both epidermal and adnexal origins. [1][2][3] Neoplastic transformation occurs with an estimated incidence of 10% to 30%, and risk increases with patient age. 3,4 Although tumors may rarely develop in children, 5,6 most neoplasms arise during the fourth to seventh decades.…”

Pigmented Trichoblastoma Arising from the Nevus Sebaceous: A Rare Case in Korea

“…Several benign and malignant tumors can develop from nevus sebaceous [1][2][3] , with trichoblastoma and syringocystadenoma papilliferum 4 the most common benign forms. Trichoblastoma, occurring primarily or secondarily as dermal neoplasm, appear as a solitary, small, non-ulcerated nodule on the scalp or face 5 .…”

“…Nevus sebaceous is a congenital tumor, usually located on the scalp or face, and presents as an alopecic patch or a slightly elevated yellowish plaque [1][2][3] . Various tumors can arise from the nevus sebaceous, including trichoblastoma 4 .…”

Nevus Sebaceous Accompanying Secondary Neoplasms and Unique Histopathologic Findings

“…The lesion usually presents as a linear, yellow, hairless, and verrucous plaque, characteristically evolves, and changes in morphology with time1,2. It has been well-established that various types of appendageal tumors develop secondarily within lesions of NS.…”