Med Laser 2022; 11(2): 110-114  https://doi.org/10.25289/ML.2022.11.2.110
Treatment of elastosis perforans serpiginosa with the 585-nm pulsed dye laser
Yeon-Gu Choi1, Jin Seop Kim1, Seoung Wan Chae2, Young-Jun Choi1
1Department of Dermatology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
2Department of Pathology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
Correspondence to: Young-Jun Choi
E-mail: youngjune.choi@samsung.com
ORCID: https://orcid.org/0000-0002-9501-2914
Received: April 27, 2022; Accepted: June 8, 2022; Published online: June 30, 2022.
© Korean Society for Laser Medicine and Surgery. All rights reserved.

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Elastosis perforans serpiginosa (EPS) is a rare disorder showing erythematous or skin-colored hyperkeratotic papules with a serpiginous or arcuate distribution. There are various treatment modalities available, but a standard treatment method has not been established. We report the case of a 33-year-old male patient with a 2-month history of grouped, multiple, annular-shaped, scaly erythematous papules on his right anterior neck. A histopathological analysis revealed increased brightly eosinophilic elastic fibers from the papillary dermis through the epidermis and clutching the dermis at the site of the perforation of the elastic fibers. Immunohistochemical analysis revealed abnormal elastic fibers with transepidermal elimination in the papillary dermis on the elastic stain. Based on these features, the lesion was diagnosed as EPS. After treatment with six sessions of the 585-nm pulsed dye laser over 3 weeks, the lesion was cleared without any adverse events and no recurrence was observed 2 months after therapy.
Keywords: Dermoscopy; Elastosis perforans serpiginosa; Lasers
INTRODUCTION

Elastosis perforans serpiginosa (EPS) is a rare disorder classified as a primary perforating dermatosis.1 EPS is characterized by hyperkeratotic, skin-colored or erythematous papules or plaques with a serpiginous or arcuate distribution usually occurring on the face, neck, ear, upper extremities, trunk, and lower extremities. The most prominent histopathologic finding is the presence of narrow transepidermal or perifollicular perforating canals that extend upward in a straight or corkscrew pattern from the dermis and contain a mixture of degenerated eosinophilic elastic fibers, basophilic debris, and inflammatory cells.1 The mechanism by which the elastic fibers are altered is not known.2

Numerous treatment options have reported including cryotherapy,3 laser resurfacing,2 topical steroid,4 topical tazarotene,4 isotretinoin,5 and tape stripping6 with showing varying results. Destructive treatment modality such as cryosurgery or ablative CO2 laser may leave permanent scars and lead cosmetic problems such as post-laser dyspigmentation. The erythematous feature of EPS lesions suggested that the pulsed dye laser (PDL) may be effective.

Herein, we report a therapeutic experience of EPS on the neck in a 33-year-old male using the PDL. A written informed consent was obtained from the patient for the publication of this case report.

CASE REPORT

A 33-year-old Korean male visited our clinic with erythematous hyperkeratotic papules coalescing into several plaques on his right anterior neck. These plaques first appeared 2 months ago and increased in number. The patient did not complain of any other symptoms. His previous medical history was not remarkable other than seasonal allergic rhinitis.

At another local clinic, microscopic potassium hydroxide preparation obtain form the lesion was performed and showed negative result. As a result, under the suspicions of eczema and tinea incognito, the patient was treated with short course of oral itraconazole, minocycline and prednisolone about a week but did not show any improvement. There was no other medication history.

On examination, grouped, multiple, annular-shaped, scaly erythematous papules (about 2 to 4 mm in size) on the right anterior neck (Fig. 1A). Fungus culture obtained from the skin lesion was negative for fungus. Dermoscopic examination revealed polymorphous vasculatures on skin-colored and whitish patch and irregularly arranged multiple keratotic yellowish papules (Fig. 1B). A skin punch biopsy was performed under suspicion of tinea incognito or EPS. The pathology revealed focal hyperplastic epidermis that appears to clutch the dermis at the site of perforation of elastic fiber. The papillary dermis were infiltrated increased brightly eosinophilic elastic fibers and basophilic mass comprising degenerate epithelial cells, inflammatory debris (Fig. 2A, B). Elastic stain revealed abnormal elastic fibers in the upper dermis showing transepidermal elimination and trichrome stain demonstrated that blue-staining collagen fibers were not involved (Fig. 2C, D). Considering these clinical, dermoscopic, and histopathological features, EPS was diagnosed.

Figure 1. (A) Grouped, multiple, annular-shaped, scaly erythematous papules on right anterior neck at the first visit and (B) polymorphous vasculatures on skin-colored and whitish patch with keratotic papules (yellow arrow) on dermoscopic examination. (C) Complete regression of the lesions 5 months after six sessions with minimal scar.

Figure 2. (A) Histopathologic examination revealed a focal hyperplastic epidermis that appears to clutch the dermis at the site of perforation of elastic fiber and basophilic mass (hematoxylin and eosin, ×100) and (B) the basophilic mass comprises degenerate epithelial cells, inflammatory debris (hematoxylin and eosin, ×200). (C) Elastic stain revealed abnormal elastic fibers in the upper dermis showing transepidermal elimination (×200) and (D) trichrome stain demonstrated that blue-staining collagen fibers were not involved (×40).

Considering cosmetically importance and anatomical characteristics of thin skin of neck, a treatment of the EPS using PDL was proposed rather than any other ablative or fractional lasers to prevent scar. Treatment using a 585-nm PDL (CynergyTM; Cynosure Inc., Westford, MA, USA) performed six sessions per three weeks after administration of topical anesthesia using lidocaine-prilocaine cream. The laser parameter used for the treatment was as follows: fluence 8.0 J/cm2, pulse duration 6 ms, spot size 7 mm, frequency 1.5 Hz. Clinical endpoint was immediate change of a transient gray color. Complete regression of the lesions 5 months after six sessions without scarring (Fig. 1C). No adverse events associated with laser therapy were noted. After laser treatment, maintenance therapy was done with 2 months of tretinoin cream 0.01% and 1 month of topical mometasone furoate 0.1% cream for every two days to prevent recurrence. No recurrence was observed for 2 months after therapy and is under continuous observation.

DISCUSSION

The pathophysiology of EPS is not well-established, it has been postulated that focal irritation in the dermis may induce formation of epidermal and follicular channels to extrude the irritating agent.7 Three forms of EPS have been recognized; idiopathic, reactive, and D-penicillamine induced type. Concerning the idiopathic type, few reports in the literature have described a familial occurrence.8 For reactive subtypes, the 62-kDa elastin receptor peptide, not expressed by normal cells but only by perilesional keratinocytes, thought to be allows the fibres to migrate along transepidermal channels. Moreover, immunoglobulin deposits were found in altered elastic fibres, supporting the hypothesis of an immune pathogenesis.8

With the vague pathophysiology, consensus of EPS treatment was not established with few evidence. Among several treatment modalities, laser therapy has proposed as a novel therapeutic modality. Several cases were previously reported using ablative erbium YAG,1 ablative CO2,2,9 ablative fractional CO210 and PDL2,11 in EPS treatment. As abnormal elastic tissue are being extended from dermis to epidermis through transepidermal channels, ablative lasers may be too superficial to remove entire pathological elastic tissue or too deep with possibility of making scar. Previously, several cases using the PDL in treatment of EPS were reported with almost clear or clear lesion and without any adverse effect. Table 1 summarized previously reported EPS patient treated with the PDL. The patient showed marked improvement within 2-8 treatment session and did not recur during follow-up period.

Table 1 . Previously reported cases of elastosis perforans serpiginosa treated with the pulsed dye laser

YearReferenceSex/AgeSiteTreatment parametersTreatment intervalNo. of treatment sessionResponseRecurrenceAdverse events
2000Kaufman11M/26Upper and lower extremities5 mm, 7 J/cm21-2 months2ClearedNone (14 months)None
2003Saxena and Tope2M/17Left and right neck7 mm, 0.45 ms, 6-7 J/cm24-6 weeks5Moderate improvementNone (6 months)None
2019Rinaldi et al.12M/15Posterior neck7 mm, 0.45-1.5 ms, 8-15 J/cm26 months8Moderate improvement (75%)None (15 years)None
2022Our caseM/33Right anterior neck7 mm, 6 ms, 8 J/cm23 weeks6ClearedNone (2 months)None


The mechanism of action of the PDL in the treatment of EPS is not exactly known. PDL is based on the principle of selective photothermolysis, provide permanent thermal damage with the surrounding tissue held intact. The target chromophore of 585-nm PDL is oxyhemoglobin. PDL with 585-nm penetrates about 1.2 mm and the pulse duration we used was 6 ms. As the thermal relaxation time is 140 μsec in capillaries with a diameter of 20 μm and 3,600 μsec capillaries with a diameter of 100 μm, 585-nm PDL is effective in the treatment of small to medium-sized vessels. As polymorphous microvascular structure was observed on dermoscopy, the PDL might be effective in treatment of our patient. The assumed effect is a specific absorption of light in the blood vessels of the superficial dermis, resulting in release of inflammatory mediators into the interstitium followed by stimulated fibroblast activity.12 Also, PDL can be used as a safe and effective treatment modality for inflammatory skin diseases such as localized plaque psoriasis and acne vulgaris.13 These findings suggest that PDL may have anti-inflammatory properties. These previous studies support the hypothesis that PDL has anti-inflammatory properties and ameliorates the vascular consequences of inflammatory response of EPS.

Alternatively, the laser may function in a nonspecific fashion similar to cryosurgery, causing a quicker elimination of the abnormal elastic fibers.11 In the same context, the PDL appears to be effective treatment for striae distensae and sun-damaged skin.14,15 Zelickson et al.15 reported that histologic examinations of straie distensae lesion revealed replacement of abnormal elastic tissue to a superficial dermal band of well-organized elastin and collagen fibers after treated with the PDL. Besides, Nehal et al.14 had noticed only mild subjective improvement in texture of mature striae distensae with the use of PDL, however, it failed to show the same pathologic changes. Although the PDL improve clinical aspects of EPS, it shows conflicting in histopathological study and the understanding of exact mechanism is insufficient.

In order to make better treatment decisions such as laser parameter or treatment duration, a better understanding of EPS at molecular and cellular level is needed to elucidate of the treatment mechanism.

FUNDING

None.

CONFLICT OF INTEREST

No potential conflict of interest relevant to this article was reported.

AUTHOR CONTRIBUTIONS

Concept and design: YGC, YJC. Analysis and interpretation: YGC, SWC, YJC. Data collection: JSK. Writing the article: YGC, YJC. Critical revision of the article: SWC, YJC. Final approval of the article: YJC. Statistical analysis: YGC, JSK. Overall responsibility: YJC.

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