Desmoplastic melanoma associated with an intraepidermal lentiginous lesion: case report and literature review.
An Bras Dermatol
; 88(3): 408-12, 2013.
Article
em En
| MEDLINE
| ID: mdl-23793214
Desmoplastic melanoma tends to present as firm, amelanotic papules. Microscopically, it reveals a proliferation of fusiform cells in the dermis and variable collagen deposition, as well as intraepidermal melanocytic proliferation of lentiginous type in most cases. Biopsy in a 61-year-old white male patient, who had received a diagnosis of lentigo maligna on his face 10 years before, revealed a proliferation of dermal pigmented spindle cells and collagen deposition, reaching the deep reticular dermis, with a lentiginous component. Immunohistochemistry with S-100, Melan-A and WT1 showed positivity, but it was weak with HMB45. Desmoplastic melanoma associated with lentigo maligna was diagnosed. Several authors discuss whether desmoplastic melanoma represents a progression from the lentiginous component or arises "de novo". Desmoplastic melanoma represents a minority of cases of primary cutaneous melanoma (less than 4%). Identification of lentigo maligna indicates that desmoplastic melanoma should be carefully investigated.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Cutâneas
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Neoplasias Faciais
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Melanoma
Tipo de estudo:
Prognostic_studies
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Risk_factors_studies
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Systematic_reviews
Limite:
Humans
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Male
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Middle aged
Idioma:
En
Revista:
An Bras Dermatol
Ano de publicação:
2013
Tipo de documento:
Article