Multiple follicular cysts, infundibular type with vellus hairs and solar elastosis of the ears: a new dermatoheliosis?

摘要

BACKGROUND: Vellus hair cyst is an uncommon developmental abnormality of the vellus follicle histologically defined as a stratified squamous epithelial-lined cyst containing one or more vellus hairs. METHODS: Herein, we report three patients with a heretofore described clinicopathologic condition consisting of multiple contiguous cysts of the ear helices showing solar elastosis and multiple cysts containing vellus hairs, microscopically. CONCLUSION: Given the anatomic location, history of excessive ultraviolet exposure and pathologic alterations, we surmise that this is a condition related to Favre-Racouchot syndrome, which is predisposed by excessive ultraviolet light exposure.