Acquired Dermal Melanocytosis of the Hand: A New Clinical Type of Dermal Melanocytosis

Fukuda, Michio; Kitajima, Junichi; Fushida, Hiroyo; Hamada, Toshio

doi:10.1111/j.1346-8138.1993.tb01339.x

Cited by 21 publications

(19 citation statements)

References 14 publications

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“…Extrafacial ADMs have been occasionally reported. These cases were confined to different isolated sites such as extremities, palms, hands (Fig. a and b), trunk, an operation scar, the area of a previously treated psoriasis plaque or corresponding to different dermatomes such as C3 .…”

Section: Atypical Variants and Presentations Of Dermal Melanocytosesmentioning

confidence: 99%

The spectrum of benign dermal dendritic melanocytic proliferations

Baykal

Yılmaz

Sun

et al. 2019

Acad Dermatol Venereol

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Dermal melanocytoses (DMs) comprise a heterogeneous group of benign lesions, located on skin and mucous membranes, characterized by dendritic melanocytes in the dermis. Although they share common histopathological features, some variants may present only as bluish or grey patches, some only as papules/nodules/plaques and others may show combination of all of these lesions. Despite the fact that blue naevus (BN) is typically characterized with papulonodular lesions, its variants may show all of the aforementioned presentations. Mongolian spot, naevus of Ota and naevus of Ito are patchy DMs distinguished by their specific localizations. Apart from these classical forms, many atypical variants without unique clinicopathological characteristics have been described in the literature making the nomenclature of DMs more complicated. However, congenital dermal melanocytosis and acquired dermal melanocytosis seem to be crucial umbrella terms that encompass all patchy DMs in atypical locations. Papules or subcutaneous nodules on patchy lesions and association of epidermal pigmentation presenting as brownish patches may be encountered as rare features of DMs. On the other hand, delayed‐onset subcutaneous nodules may be typical presentations of melanoma in patchy DMs; therefore, they deserve special attention. Large plaque‐type BN with subcutaneous cellular nodules is a newly described entity, harbouring clinical features of various DMs together and has a high risk of melanoma. The whole spectrum of dermal dendritic melanocytic proliferations is discussed including novelties and controversial issues.

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Section: Atypical Variants and Presentations Of Dermal Melanocytosesmentioning

confidence: 99%

The spectrum of benign dermal dendritic melanocytic proliferations

Baykal

Yılmaz

Sun

et al. 2019

Acad Dermatol Venereol

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“…Also, the clinical stability of the dermal melanocytosis may be explained by the presence of an extracellular sheath surrounding melanocytes, 22 seen on electron microscopy and present in all forms of classic dermal melanocytosis except for the blue nevus 23 . Extracellular sheaths have been demonstrated in persistent acquired dermal melanocytosis 5,12,13 . In fact, extracellular sheaths of Mongolian spots decrease with age and usually disappear, as opposed to the persistent Mongolian spots, where they are preserved 22 .…”

Section: Discussionmentioning

confidence: 99%

Clinically distinct form of acquired dermal melanocytosis with review of published work

Harrison-Balestra

Gugic

Vincek

2007

The Journal of Dermatology

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Dermal melanocytosis is most commonly found in the skin of Asians and other darkly pigmented people. It is histologically characterized by the presence of dermal melanocytes, with or without presence of dermal melanophages. Mongolian spot, nevus of Ito, nevus of Ota, nevus of Hori, and blue nevus are most common and represent distinct types of dermal melanocytosis. Other clinical patterns of acquired dermal melanocytosis have also been described. Herein, we report a unique case of acquired dermal melanocytosis diffusely affecting the entire back of a 50-year old African-American male and also review and discuss various patterns of unusual acquired dermal melanocytosis.

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“…In some cases, ADM lesions are distributed only on the extremities without involving the face (3)(4)(5)(6)(7)(8) (Table 1). In the cases re- ported by Jimenez et al (7), as well as in the present case, the lesions appeared on the dorsum of the right wrist; in the cases of reported by Mevorah (3), Fukuda (4) and Sinohara (5), on the hands, fingers, palms, and forearms.…”

Section: Discussionmentioning

confidence: 99%

“…In contrast, Mevorah et al reported a case of ADM on the right hand (3). Subsequently, several cases of ADM on the hand (4)(5)(6), wrist (7), lower legs (8), and foot (8) were reported. This case had a blue-black patch on the right wrist.…”

Section: Introductionmentioning

confidence: 99%