Hair follicle nevus: case report and review.
Hair follicle nevus has been variously defined as a specific type of neoplasm with follicular differentiation or as a synonym for trichofolliculoma; the latter view has predominated in recent years. We report a nodular lesion that was identified histopathologically as a hamartoma with follicular differentiation and that systematic serial sectioning showed not to be a trichofolliculoma. After reviewing previous descriptions of lesions diagnosed as hair follicle nevus, and in the light of our own observations, we believe that hair follicle nevus is a distinct type of adnexal hamartoma.
Labandeira
J
J
Department of Dermatology, Faculty of Medicine, Santiago de Compostela, Spain.
Peteiro
C
C
Toribio
J
J
D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D018859:Hair Follicle / Q000473:pathology*; D006222:Hamartoma / Q000175:diagnosis / Q000473:pathology*; D006801:Humans; D018295:Neoplasms, Basal Cell / Q000175:diagnosis / Q000473:pathology; D009508:Nevus, Pigmented / Q000473:pathology*; D012878:Skin Neoplasms / Q000175:diagnosis / Q000473:pathology