Changes in melanocytic nevi after treatment with intense pulsed light observed in total body mapping

Hunziker, Maria Fernanda Vianna; Mauad, Eduardo Botelho Silva; Fernandes, Luís Fernando Amarante; Pinheiro, Ana Maria Costa

doi:10.1590/abd1806-4841.20165389

Cited by 9 publications

(9 citation statements)

References 4 publications

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“…They also showed that grayish area or milky red veil reflects collagen degeneration on the upper dermis that is the result of inflammatory reaction caused by acute thermal injury. [7][8][9]11,12 Micro-crust usually appeared a few days after photo-irradiation of pigmented lesions. It is explained by destruction of epidermal melanin containing cells and promotion of a rapid differentiation of keratinocytes that leads to an upward transfer of melanocytes along with necrotic keratinocytes.…”

Section: Discussionmentioning

confidence: 99%

“…Histopathologic or electron microscopy studies showed this homogeneous disorganized pigmentation is compatible with micro‐crust composed of keratinocyte debris and numerous melanosomes. They also showed that grayish area or milky red veil reflects collagen degeneration on the upper dermis that is the result of inflammatory reaction caused by acute thermal injury 7‐9,11,12 …”

Section: Discussionmentioning

confidence: 99%

“…Moreover, some of them reported changes of nevi in patients with personal or family history of dysplastic nevi or malignant melanoma, although histologic changes did not reveal enough evidence for malignant transformation. [6][7][8][9][10][11][12] In addition to these scattered reports, recently Guicciardi et al evaluated clinical and dermoscopic effects of photoepilation on 73 melanocytic nevi in a prospective study. They noted pigmentation changes including complete regression and also progressive growth but not malignant modification.…”

Section: Introductionmentioning

confidence: 99%

“…There are some case reports that show regression or dermoscopic changes in the size, pigmentation, and pattern of melanocytic nevi after photo‐depilation with IPL or laser systems. Moreover, some of them reported changes of nevi in patients with personal or family history of dysplastic nevi or malignant melanoma, although histologic changes did not reveal enough evidence for malignant transformation 6‐12 …”

Section: Introductionmentioning

confidence: 99%

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Dermoscopic changes in melanocytic nevi following hair removal laser: A prospective study

Nasimi

Lajevardi

Mahmoudi

et al. 2021

J of Cosmetic Dermatology

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Background: Changes in the appearance of melanocytic nevi have been increasingly reported following hair removal lasers. This could be a source of anxiety in patients doing cosmetic hair removal lasers. Moreover, taking biopsy of any changed nevus following laser is not routinely practical. Therefore, this study was designed to describe dermoscopic changes happened on acquired junctional melanocytic nevi after photodepilation methods. Method:In this prospective study, 66 melanocytic nevi in 27 patients were chosen.Dermoscopic images were taken at the baseline visit and 2 months following single session of hair removal laser. Afterward, the before and after laser images were compared for any change in the structure and color of the nevi.Results: Dermoscopic images showed alterations in nevi following laser including changes in size in 33%, color in 63.6%, newly developed asymmetry in 12.1%, and regression in 3% of nevi. Besides, alteration in reticular and dots and globules pattern was found in 92.5% and 69.32%, respectively. Conclusions:Hair removal laser could induce considerable changes in appearance of acquired junctional melanocytic nevi. Dermoscopic study before and after the process could help to avoid unnecessary excision of suspected lesions.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dermoscopic changes in melanocytic nevi following hair removal laser: A prospective study

Nasimi

Lajevardi

Mahmoudi

et al. 2021

J of Cosmetic Dermatology

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show abstract

“…Histologic investigations have shown that even with maximum penetration depth of laser and IPL therapies, residual nests of melanocytes are still left intact. 2,8 These persistent dermal melanocytes can generate recurrent lesions, which can transform into melanoma. 3 A common result of incomplete treatment of melanocytic lesions is pseudomelanoma from proliferation of melanocytes via downregulation of E-cadherin and tumour necrosis factor-a, leading to repigmentation.…”

Section: Discussionmentioning

confidence: 99%

Cosmetic light therapies and the risks of atypical pigmented lesions

2021

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Clinical and dermoscopic evaluation of melanocytic nevi changes during diode laser hair removal: A prospective study

et al. 2022

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Background Laser hair removal (LHR) is a common practice with increasing use worldwide. Clinical and dermoscopic changes in melanocytic nevi after LHR have been reported but prospective studies are lacking. Objective To describe dermoscopic changes of melanocytic nevi at different time points after LHR. Methods Prospective study in a cohort of female patients undergoing diode LHR. Dermoscopic follow‐up of at least three nevi on the legs that underwent hair removal. We included three nonexposed nevi on the arms as controls. Two blinded investigators analyzed dermoscopic images, according to variables selected based on the available literature. Results Thirty‐four patients were included with a total of 148 nevi on the legs and 112 nevi on the arms (controls). 47.9% (71/148) of the nevi on the legs had evidence of dermoscopic changes at the sixth hair removal session, compared to 9.8% (11/112) on controls (p < 0.001). The most frequent change was “bleaching” (41.9%, 62/148). Also, we observed “irregular hyperpigmented areas,” and “regression structures” in 5.4% (8/148) and 4.7% (7/148) of the cases at the sixth session, respectively. Neither of these structures were observed in the controls (p < 0.05). Limitations Only females were included; we did not perform histopathological evaluation nor reflectance confocal microscopy of changing nevi. Conclusion Melanocytic nevi frequently change after diode LHR. The changes cannot always distinguish between LHR induced and melanoma, so we advise avoiding nevi during laser therapies with melanin targets.

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Changes in melanocytic nevi after treatment with intense pulsed light observed in total body mapping

Cited by 9 publications

References 4 publications

Dermoscopic changes in melanocytic nevi following hair removal laser: A prospective study

Dermoscopic changes in melanocytic nevi following hair removal laser: A prospective study

Cosmetic light therapies and the risks of atypical pigmented lesions

Clinical and dermoscopic evaluation of melanocytic nevi changes during diode laser hair removal: A prospective study

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