+22 Eruptive Vellus Hair Cysts 2023. Cysts are characteristically located in the mid dermis and contain variable amount of laminated keratin and multiple transversally and obliquely cut vellus hair. Regarding the distri bution of lesions, the anterior portion of the chest has been involved in all cases, with the flexor forearm and popliteal fossa.
Web eruptive vellus hair cyst (evhc) represents developmental abnormality of vellus hair follicle. Web eruptive vellus hair cysts are uncommon developmental anomalies of vellus hair follicles that are observed in young patients. The cause of these lesions is obscure.
