Eruptive Vellushaarzysten

Abstract

Eruptive vellus hair cysts are rare epidermal cysts with vellus hairs, which appear in children or young adults. A 21-year-old patient is reported who developed asymptomatic comedo-like papules on his face, neck and chest. Histopathologically, epidermoid cysts with a fine stratum granulosum, laminated keratinous material and numerous vellus hairs were found in the mid-dermis. Evaluation of immediate family members revealed that the patient's father was similarly affected. Eruptive vellus hair cysts and steatocystoma multiplex are clinically similar, but have distinctive histopathological features and should be regarded as distinct entities.

Early Recurrence of Eruptive Vellus Hair Cysts after Er:YAG Laser Therapy: Case Report and Review of the Literature

“…In the literature, various topical and surgical therapeutic options have been reported, with varying outcomes. In some cases, topical application of retinoids was successful, 34 whereas in other cases, this therapy produced no clinical improvement 9,14 . Systemic therapy with retinol 5 or isotretinoin 35 showed no satisfying results either.…”

“…One mechanism may be transepidermal elimination; the cyst content is eliminated via the pore that connects the cyst with the epidermal surface. Another explanation is the development of a foreign body giant cell reaction with subsequent dissolution 3,9 …”

“…In familial cases, EVHCs are first noted at birth or during early childhood. 4,7 Males and females are equally affected, 4,8,9 and no racial predilection exists. 8,10,11 EVHCs appear clinically as multiple, flesh, white to yellow-or slightly bluish-colored umbilicated papules measuring 1 to 5 mm in diameter.…”

“…The cysts are usually closed, but squeezing may express white to yellow material. 9,14 EVHCs typically appear on the anterior aspect of the chest but may also occur on the face (mostly periorbital), the extremities, the back, and the abdomen; in the gluteal and axillary region and the groin; and on the ear and neck. 13,15 Diagnosis of EVHCs includes a biopsy, or a tiny incision at the top of a lesion, followed by gentle expression of cystic material.…”

Eruptive vellus hair cysts on the face: a case report and literature review

“…Beş (%25) hastada eşlik eden başka bir hastalık (milia, steatokistoma multipleks, atopik dermatit, anhidrotik ektodermal displazi, diyabet ve kronik böbrek yetmezliği) izlendi. Hastaların 13'ünde (%65) lezyonların rengi deri renginden farklıydı, sadece birinde subjektif yakınma olarak kaşıntı mevcuttu 2,[6][7][8]13,14,16,[19][20][21][22][23][24][25][26] . Lezyonlardaki ağrı ve hassasiyete bizim olgumuz dışında rastlanılmadı.…”