Rosettes and other white shiny structures in polarized dermoscopy: histological correlate and optical explanation

Haspeslagh, Marc; Noe, Megan H.; Wispelaere, Ine De; Degryse, Nele; Vossaert, Katrien; Lanssens, Sven; Facchetti, Fabio; Bossche, Klaartje Van den; Brochez, Liève

doi:10.1111/jdv.13080

Cited by 58 publications

(74 citation statements)

References 9 publications

(16 reference statements)

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“…20 Some structures such as white shiny lines or rosettes are visible only under polarized light. 21,22 Nevertheless, the choice of polarized or non-polarized light in this study only affected a few cases and did not play a major role.…”

Section: Discussionmentioning

confidence: 92%

Teledermoscopy images acquired in primary health care and hospital settings – a comparative study of image quality

Gyllencreutz

Bäckman

Terstappen

et al. 2017

Acad Dermatol Venereol

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Section: Discussionmentioning

confidence: 92%

Teledermoscopy images acquired in primary health care and hospital settings – a comparative study of image quality

Gyllencreutz

Bäckman

Terstappen

et al. 2017

Acad Dermatol Venereol

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“…Four dot clods were first thought to be specific for actinic keratosis and squamous cell carcinoma, and however, they are not lesion specific and are described in many neoplastic, inflammatory and infectious conditions including the following: melanoma, basal cell carcinoma, naevus, dermatofibroma, molluscum contagiosum, urticaria, cicatricial alopecia, discoid lupus erythematosus lesions and even on sun‐damaged skin. They can only be seen with polarised dermoscopes.…”

Section: Discussionmentioning

confidence: 99%

“…following: melanoma, basal cell carcinoma, naevus, dermatofibroma, 3,10-12 molluscum contagiosum, urticaria, cicatricial alopecia, discoid lupus erythematosus lesions 10,13 and even on sun-damaged skin. They can only be seen with polarised dermoscopes.…”

Section: E52mentioning

confidence: 99%

Dermoscopic findings of Kaposi sarcoma and dermatopathological correlations

2019

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Background/Objective There are a limited number of studies regarding the dermoscopic features and dermatopathological correlations of Kaposi sarcoma. The primary objective of this study was to evaluate dermoscopic features of Kaposi sarcoma, and the secondary objective was to investigate their dermatopathological correlates. Methods Dermoscopic and clinical analysis of 222 lesions from 38 patients with histologically confirmed Kaposi darcoma were assessed by two investigators. A total of 83 biopsies were available from different clinical stages. Additionally, 3 mm punch biopsy was performed where newly defined dermoscopic findings were observed. Modified pattern analysis algorithm was used for the dermoscopic evaluation. Results The most common dermoscopic features of Kaposi sarcoma were white lines (55.9%) and white clods (37.8%) followed by surface scale (32.9%) and polychromatic colour change (22.1%). Four dot clods, white lines, white clods, collarette sign, serpentine vessels, dotted, curved and coiled vessels were the new dermoscopic findings of our study. Polychromatic colour change is correlated with the presence of hyaline globules probably with their birefringence properties, whereas we found no significant correlation between polychromatic colour change and honeycomb‐like pattern of vascular spaces. Conclusions White lines, white clods, four dot clods, collarette sign, serpentine vessels, dotted, curved and coiled vessels are the new dermoscopic features of Kaposi sarcoma, and polychromatic colour change is correlated with the presence of hyaline globules.

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“…Many authors believe that it is due to the optical effect of polarized light. It is postulated that rosettes are formed by narrowing of infundibula or blockage by keratin [24]. Others suggested that rosettes correspond to an alternating focal hyperkeratosis and normal corneal layer and keratin-filled acrosyringeal openings.…”

Section: Discussionmentioning

confidence: 99%

The Role of Dermoscopy in Assessment of the Activity and Scarring Response in Discoid Lupus Erythematosus

Al-Refu¹

2018

TODJ

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Background:The diagnosis of Discoid Lupus Erythematosus (DLE) is usually made by clinical examination and by histopathology. Recently, dermoscopy has become an integral part in diagnoses of many inflammatory disorders and one of these is DLE. Aims:This research emphasizes the utility of dermoscopy in the assessing lesions of DLE from the point of activity of the disease. Patients and Methods:Thirty-one patients diagnosed with DLE were included in this study. The total number of examined lesions was 125 lesions. All of the lesions were assessed by dermoscopy at different stages of the activity of the diseases. Results:The dermoscopic features of DLE vary according to the stage of activity of the disease. There are characteristic dermoscopic features for the lesions of the scalp different from that of the body. In the active and early phase, the most common dermoscopic features were the presence of lesional and perilesional scales, follicular keratotic plugging, telangiectasia, arborized blood vessels, follicular red dots and perifollicular scales. In addition, there are less common dermoscopic features such as pigmentary changes, white rosettes and pinpoint white dots. For active scalp lesions, the follicular plugging and perifollicular scales were more prominent than that of the body DLE lesions. For inactive and late DLE lesions, the most significant dermoscopic changes were perifollicular whitish halos, variable patchy whitish hypopigmented areas, and the presence of white colored structureless areas. Conclusion:The present study provides new insights into the dermoscopic variability of DLE lesions at different levels of activity.

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Rosettes and other white shiny structures in polarized dermoscopy: histological correlate and optical explanation

Abstract: Rosettes are an optical effect of crossed polarization by concentric fibrosis or horny material and hence are not lesion-specific.

Cited by 58 publications

References 9 publications

Teledermoscopy images acquired in primary health care and hospital settings – a comparative study of image quality

Teledermoscopy images acquired in primary health care and hospital settings – a comparative study of image quality

Dermoscopic findings of Kaposi sarcoma and dermatopathological correlations

The Role of Dermoscopy in Assessment of the Activity and Scarring Response in Discoid Lupus Erythematosus

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