Quistes vellosos eruptivos con compromiso facial: presentación de un caso / Eruptive vellus hair cyst with facial involvement: case report

Los quistes vellosos eruptivos se presentan como lesiones de 1 a 4 mm, aspecto papular, color piel, rojizo a amarillento de etiología desconocida, localizados en tórax anterior o extremidades, con menor frecuencia pueden observarse en cara, cuello, abdomen y glúteos. Representan una patología poco frecuente derivada del infundíbulo piloso que puede ocurrir esporádicamente o ser heredada de forma autosómica dominante. Aunque su principal importancia radica en el diagnóstico diferencial, la dificultad en el manejo terapéutico es otro reto en esta entidad. Se presenta un caso de quistes vellosos eruptivos con compromiso extenso en el cual consideramos de interés peculiar, la localización facial.

Eruptive vellus hair cysts are papular lesions of 1-4 mm, skin color, reddish to yellowish, of unknown etiology, located on anterior chest or extremities. Less frequent locations may be seen on face, neck, abdomen and buttocks. It is an unusual condition resulting from hair infundibulum that may occur sporadically or being inherited in autosomal dominant manner. Although its main importance lies in the differential diagnosis, therapeutic approach is another challenge in this entity. A case of eruptive vellus cyst with extensive involvement is presented, emphasizing facial location of the lesions.

Vellus Hair Cysts Developing on the Labium Major / 대한피부과학회지

No abstract available.

A Case of Eruptive Hair Cyst Developed on the Eyelid

PURPOSE: Eruptive vellus hair cysts (EVHC) are benign lesions that affect the pediatric population and are rarely seen congenitally or in young adults. EVHCs are small, cystic papules that usually occur on the chest and proximal extremities. EVHCs of the eyelids have been reported infrequently. We experienced a case of solitary EVHC that developed on the eyelid in a middle-aged male. Herein, we present our case with a brief review of the literature. CASE SUMMARY: A 44-year-old male presented with a history of an asymptomatic, palpable mass in the right upper eyelid that had been slowly growing for 2 years. Physical examination revealed non-tender, firm and round mass in right upper eyelid. Computed tomography scan of the orbit showed a 7.0 x 9.0 x 9.5 mm-sized focal bulging contour in the right upper eyelid. The patient underwent sub-brow incision and excisional biopsy of the eyelid mass. Histopathological examination revealed a 7.0 x 6.0 x 4.0 mm-sized cystic structure lined by squamous epithelium containing laminated keratinous materials and multiple vellus hair shafts. There was no local recurrence during the postoperative follow-up. CONCLUSIONS: We experienced a rare case of EVHC that developed on the eyelid. Based on our experience, EVHC should be considered when determining an eyelid mass, especially around hair follicles.

A Case of Melanocytic Nevus Combined with an Vellus Hair Cyst / 대한피부과학회지

A nevus with cyst is defined as a single lesion of a melanocytic nevus, and this is commonly associated with an epidermal cyst. There have been rare reported cases of adnexal origin. The combination of nevus and cyst could possibly be misdiagnosed clinically as a malignant melanoma at initial examination. A 51-year-old woman presented with a painful, solitary, dome-shaped, erythemaous nodule on the forehead which had been present for several years. The histopathologic specimen of the nodule showed a solitary cyst with a melaocytic nevus. There were nevus cells without junctional activities in the upper dermis and melanin pigments in the upper dermal nevus nest. It contained lamellated keratin materials and vellus hair shafts. We report here a rare case of melanocytic nevus combined with an vellus hair cyst in a 51-year-old woman.

A Case of Eruptive Vellus Hair Cyst Involving the Face, Trunk, and Extremities / 대한피부과학회지

Eruptive vellus hair cyst (EVHC) is a benign epithelial tumor. Clinically, it usually presents as grouped or scattered yellowish to reddish-brown papules. It predominantly appears on the anterior part of the chest and extremities. Facial involvement is uncommon and 4 cases with facial involvement have been reported in the Korean dermatologic literature. However, involvement of the face coexistent with involvement of the trunk and extremities has never been reported in the Korean dermatologic literature. Herein, we report on a 10-year-old girl with multiple asymptomatic papules on her face, back and upper arms. To the best of our knowledge, this is the first report of EVHC that involves not only the face, but also the trunk and extremities in the Korean dermatologic literature.

A Case of Eruptive Vellus Hair Cysts That Developed on the Labium Major

Eruptive vellus hair cysts are asymptomatic, flesh-colored- to-bluish, 1-to-4 mm-sized papules that are usually located on the chest and extremities of children and young adults. Histologically, small cysts are observed in the mid-dermis and these cysts contain multiple hair shafts and keratinous materials. We report here on a case of eruptive vellus hair cysts that developed on a rare site, the labium major.

Two Pilosebaceous Cysts with Apocrine Hidrocystoma in One Biopsy Site: A Spectrum of the Same Disease Process?

A 28-year-old woman presented with multiple, asymptomatic, erythematous to bluish papules located on the chest. Histopathologically, three round, well defined cystic structures were seen on the upper and lower dermis. The first cyst was milia, the second was apocrine hidrocystoma and the other, largest cyst was an eruptive vellus hair cyst (EVHC). A diagnosis of multiple pilosebaceous cysts combined with apocrine hidrocystoma was made. Since the milia and EVHC originate from the pilosebaceous unit, and the apocrine duct opens to the pilosebaceous orifice, we suggest that they can occur simultaneously in the same unit.

A Case of Eruptive Vellus Hair Cyst Treated by Mini-incision / 대한피부과학회지

Eruptive vellus hair cysts are yellowish or reddish-brown and are grouped or scattered papules with a smooth or crusted surface. The cysts occur predominantly over the anterior part of the chest, extremities and axillae, although they can also be seen on the neck and groin and may range from a single lesion to hundreds. Lesions have rarely been reported to regress spontaneously, so patients request treatment for cosmetic reasons. Few case reports exist on therapy for eruptive vellus hair cysts. It is known that therapies can lead to unsatisfying results or recurrences. We report a case of an eruptive vellus hair cyst successfully treated by mini-incision.

A Case of Melanocytic Nevus Combined with a Vellus Hair Cyst / 대한피부과학회지

The combination of melanocytic nevus with other tumors of epidermal or adnexal origin has been described since the first case reported by Andresen and Enos in 1952. Most of reported cases are melanocytic nevi combined with common epidermoid cysts. The combination of nevus and cyst could possibly be misdiagnosed clinically as a malignant melanoma upon initial examination. A 58-year-old woman presented with an asymptomatic, solitary, skin-colored, erythematous 1.0 cm-diameter pedunculated nodule on the occipital scalp which had been present childhood. The histopathologic specimen of the nodule showed a solitary cyst surrounded by intradermal melanocytic nevus. The cyst was located in the dermis lined by squamous epithelium, which was ruptured and inflamed. It contained degenerated keratin materials and multiple transversely and obliquely cut vellus hairs. We herein report a rare case of melanocytic nevus combined with a vellus hair cyst.

A Case of Solitary Vellus Hair Cyst on the Forehead / 대한피부과학회지

We report a case of solitary vellus hair cyst on the forehead in a 48 year-old, female patient. She had an asymptomatic, solitary, bluish, 0.3x0.3cm sized papule on the forehead for 1 year. There was no family history of similar lesions. A punch biopsy specimen taken from the papule revealed a cystic structure in the dermis lined by squamous cell epithelium which contained laminated keratinous material and vellus hairs. Based on this histologic finding, we diagnosed this case as solitary vellus hair cyst occurring on the unusual site of the forehead.

A Case of Congenital Eruptive Vellus Hair Cyst / 대한피부과학회지

An eruptive vellus hair cyst is an uncommon, benign, epithelial tumor with hair differentiation. Clinically, it presents as asymptomatic, flesh-colored to yellowish, follicular papules, 1 to 4 mm in diameter, most commonly on the chest. It is usually seen in children and young adults but may be congenital. Histologically, it shows a middermal cyst lined by squamous epithelium containing keratinous material and vellus hairs. It has a tendency to clear spontaneously but may be persistent. We report a case of congenital eruptive vellus hair cyst in an 11-year-old girl who presented multiple pinhead-sized brown to black papules on her anterior chest since birth.

A Case of Eruptive Vellus Hair Cysts Associated with Milia on the Face / 대한피부과학회지

We report a 48-year-old female who had eruptive vellus hair cysts associated with milia on the face. Histopathologic examination of lesions on the forehead and cheek showed typical findings of eruptive vellus hair cysts and milia. These findings suggested that two entities are in some way related. Eruptive vellus hair cysts and milia can be considered as subtypes of multiple pilosebaceous cysts that may all present overlapping histologic features.

A Case of Eruptive Vellus Hair Cyst Combined With Steatocystoma Multiplex / 대한피부과학회지

Eruptive vellus hair cyst and steatocystoma multiplex are two clinically similar conditions. Most cases can be differentiated by histological examination. However, in some patients overlapping histological features have been described. We present herein a 23-year-old man with combined eruptive vellus hair cyst and steatocystoma multiplex. Histopathologically, the cyst shows feature of steatocystoma multiplex and eruptive vellus hair cyst simultaneously. This case suggests that eruptive vellus hair cyst and steatocystoma multiplex are within the same spectrum of the disease process.

A Case of Hybrid Cyst showing Composite Features of an Eruptive Vellus Hair Cyst and Steatocystoma Multiplex / 대한피부과학회지

Both eruptive vellus hair cyst and steatocystoma multiplex are uncommon conditions. There are clinical similarities between these two entities, but histological features are distinctive. We describe a patient with multiple subcutaneous nodules on the chest and both axilla, showing combined histological features of both an eruptive vellus hair cyst and steatocystoma multiplex. This case suggests that eruptive vellus hair cyst and steatocystoma multiplex are variants of one disorder which originate in the pilosebaceous duct.

A Case of Eruptive Vellus Hair Cyst Associated with Steatocystoma multiplex / 대한피부과학회지

Eruptive vellus hair cysts and steatocystoma multiplex have clinical similarities in terms of age of onset, location and appeararice of the lesions, but histopathologic feitures are distinctively differen-tiated. We present herein a 37-year-old woman with eruptive vellus hair cyst and steatocystoma multiplex as well. The histopathologic sections from 2 different lesions showed features of both eruptive vellus hair cyst with sebaceous gland in and near the cyst wall, and steatocy toma multiplex with rudimentary hair follicle near the cyst wall. This case may support the premie that eruptive vellus hair cyst and steatocystoma multiplex have a common developmental origin.