Penfigóide Bolhoso Refractário em Paciente Infectado pelo Vírus da Imunodeficiência Humana

Bullous pemphigoid, the most common autoimmune subepidermal blistering disease, is due to autoantibodies against BP180/230 present in the hemodesmosomes of the basal keratinocytes that typically causes pruritus and tense cutaneous bullae on an erythematous or normal skin It affects predominantly the elderly, often in association with neurologic or neoplastic disease. The association with the human immunodeficiency virus infection is rare. We present a case of a young VIH+ patient under antiretroviral therapy with undetectable viral load and normal CD4+ T-cell count who developed an extensive bullous pemphigoid refractory to pulses of corticosteroids, oral steroids and methotrexate and improved only after the infusion of rituximab, an anti-CD20 monoclonal antibody.Penfigóide bolhoso, a dermatose bolhosa subepidérmica auto-imune mais comum, é devida a auto-anticorpos contra partículas dos hemidesmosmas (BP180 e/ou BP230) e caracteriza-se por prurido e bolhas cutâneas tensas sobre base eritematosa ou pele normal. Afeta predominantemente idosos, por vezes com comorbilidades neurológicas ou neopláscias. A associação a infecção pelo vírus da imunodeficiência humana é rara. Relatamos o caso de uma paciente jovem VIH+ em tratamento antirretroviral com carga viral indetectável e contagem normal de células T CD4+, que desenvolveu penfigóide bolhoso com lesões extensas, incluindo na mucosa oral, resistentes a vários pulsos de corticoides, corticoides orais e metotrexato, com melhora e estabilidade clínica apenas após uma infusão de rituximab, um anticorpo monoclonal anti-CD20

Desmoplastic melanoma associated with an intraepidermal lentiginous lesion: case report and literature review Melanoma desmoplásico associado a lesão lentiginosa intraepidérmica, com evolução de 10 anos: relato de caso e revisão bibliográfica

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.Os melanomas desmoplásicos apresentam-se como pápulas amelanóticas firmes; à microscopia exibem proliferação de células fusiformes na derme e variável deposição de colágeno, além de proliferação melanocítica lentiginosa, intraepidérmica, na maioria dos casos. Realizada biópsia de pele de paciente masculino, 61 anos, branco, com diagnóstico de lentigo maligno na face, há 10 anos. O exame histopatológico revela proliferação dérmica de células fusiformes pigmentadas e deposição de colágeno, invadindo até a profundidade da derme reticular, associado a componente lentiginoso; presença de positividade imuno-histoquímica com S-100, Melan-A e WT1, e marcação fraca com HMB45. Diagnóstico de melanoma desmoplásico, associado a lentigo maligno. Existe divergência quanto à origem do melanoma desmoplásico, a partir do componente lentiginoso ou "de novo", na ausência de lentigo associado. O melanoma desmoplásico representa uma minoria dos casos de melanoma cutâneo primário (menos de 4%). A presença de lentigo maligno pode servir de sinal de alerta para possível relação com melanoma desmoplásico

Les variétés du français parlé contemporain : méthodologie et ressources

Background: Dermoscopy is a noninvasive complementary diagnostic method largely used in dermatology. Feasibility, accuracy, and reproducibility are key elements for a diagnostic method to be useful, hence the importance of the terminology used to describe dermoscopic criteria. Objective: To evaluate the reproducibility of the English descriptive terminology proposed for dermoscopic criteria at the 3rd Consensus Meeting of the International Dermoscopy Society in Brazilian Portuguese. Methods: Nine Brazilian dermatologists independently analyzed the translation of sixty dermoscopic descriptive terms proposed at the 3rd Consensus Conference of the International Society of Dermoscopy. Interobserver agreement index was analyzed using the Fleiss’ kappa test. Results: The interobserver agreement of the descriptive terminology in Brazilian Portuguese was considered weak (κ = 0.373; p < 0.05). The interobserver agreement of the descriptive terminology used to describe morphology and arrangement of vascular structures was considered moderate (κ = 0.43; p < 0.05). Study limitations: Our study limitations include the small number of participants and limited regional representation (only 2 out of 5 Brazilian regions were represented). Conclusions: The descriptive English terminology proposed at the 3rd Consensus Conference of the International Dermoscopy Society revealed weak reproducibility and the morphology and arrangement of vascular structures presented moderate reproducibility in Brazilian Portuguese. Despite small regional differences, metaphoric terminology in dermoscopy seems to be the most useful and reproducible system to be adopted in Brazilian Portuguese

Genotyping of human parvovirus B19 in clinical samples from Brazil and Paraguay using heteroduplex mobility assay, single-stranded conformation polymorphism and nucleotide sequencing

Heteroduplex mobility assay, single-stranded conformation polymorphism and nucleotide sequencing were utilised to genotype human parvovirus B19 samples from Brazil and Paraguay. Ninety-seven serum samples were collected from individuals presenting with abortion or erythema infectiosum, arthropathies, severe anaemia and transient aplastic crisis; two additional skin samples were collected by biopsy. After the procedure, all clinical samples were classified as genotype 1