Desmoplastic trichilemmoma arising within a nevus sebaceus.
A 74-year-old man presented with a tumor on his scalp that he had since birth. The authors observed a verrucous pink crusted plaque. The tumor was clinically diagnosed as nevus sebaceus and was removed. Histopathologic study showed, arising from nevus sebaceus, a lobular neoplasm with the classic features of trichilemmoma. Desmoplasia was present in the center of the trichilemmomatous area. This description is typical of a special, uncommon type of trichilemmoma that histologically mimics invasive carcinoma.
Rosón
E
E
Department of Dermatology, General Hospital of Galicia, Faculty of Medicine, Santiago de Compostela, Spain.
Gómez Centeno
P
P
Sánchez-Aguilar
D
D
Peteiro
C
C
Toribio
J
J
D000368:Aged; D006222:Hamartoma / Q000150:complications / Q000151:congenital / Q000473:pathology*; D006801:Humans; D008297:Male; D018295:Neoplasms, Basal Cell / Q000209:etiology / Q000473:pathology*; D012535:Scalp / Q000473:pathology; D012536:Scalp Dermatoses / Q000150:complications / Q000151:congenital / Q000473:pathology*; D012878:Skin Neoplasms / Q000209:etiology / Q000473:pathology*