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1.
An. bras. dermatol ; An. bras. dermatol;91(5,supl.1): 134-136, Sept.-Oct. 2016. graf
Article in English | LILACS | ID: biblio-837928

ABSTRACT

Abstract Porokeratosis is a skin disorder clinically characterized by annular plaques with keratotic borders resembling the Great Wall of China and histopathologically by cornoid lamellae. The disease has several clinical variants. Porokeratosis ptychotropica, which has recently become part of these variants, is quite rare and little known. The entity is characterized by verrucous plaques – which may resemble a psoriasis plaque – that affect the regions of the buttocks, most commonly the gluteal cleft, with or without extremity involvement. Itching is often present. We report a rare case of porokeratosis ptychotropica and highlight its unusual manifestation (single plaque), the first case reported in the Brazilian literature.


Subject(s)
Humans , Male , Young Adult , Skin/pathology , Porokeratosis/pathology , Pruritus , Biopsy , Brazil , Buttocks/pathology , Erythema/pathology
2.
An. bras. dermatol ; An. bras. dermatol;91(5,supl.1): 128-130, Sept.-Oct. 2016. graf
Article in English | LILACS | ID: biblio-837958

ABSTRACT

Abstract Plasmoacanthoma is an extremely rare verrucous tumor located on periorificial regions characterized by dense dermal plasmacytic infiltrates. Some authors classify it as a form of reactive plasma cell proliferation which represents a heterogeneous spectrum of mucocutaneous disorders. These plasma cell proliferations have been considered to be a benign immunologic inflammatory reaction to known or unknown stimuli. However, the etiology of plasmoacanthoma remains highly speculative. We report the case of a 40-year-old woman who presented with a lobulated warty lesion affecting the lower lip. Biopsy from the lesion was compatible with plasmoacanthoma, which remains an underreported disease in the dermatology literature.


Subject(s)
Humans , Female , Adult , Skin Neoplasms/pathology , Lip Neoplasms/pathology , Acanthoma/pathology , Mouth Mucosa/pathology , Plasma Cells/pathology , Biopsy , Immunohistochemistry , Dermis/pathology , Cell Proliferation , Lip/pathology
3.
An Bras Dermatol ; 91(5 suppl 1): 128-130, 2016.
Article in English | MEDLINE | ID: mdl-28300919

ABSTRACT

Plasmoacanthoma is an extremely rare verrucous tumor located on periorificial regions characterized by dense dermal plasmacytic infiltrates. Some authors classify it as a form of reactive plasma cell proliferation which represents a heterogeneous spectrum of mucocutaneous disorders. These plasma cell proliferations have been considered to be a benign immunologic inflammatory reaction to known or unknown stimuli. However, the etiology of plasmoacanthoma remains highly speculative. We report the case of a 40-year-old woman who presented with a lobulated warty lesion affecting the lower lip. Biopsy from the lesion was compatible with plasmoacanthoma, which remains an underreported disease in the dermatology literature.


Subject(s)
Acanthoma/pathology , Lip Neoplasms/pathology , Mouth Mucosa/pathology , Skin Neoplasms/pathology , Adult , Biopsy , Cell Proliferation , Dermis/pathology , Female , Humans , Immunohistochemistry , Lip/pathology , Plasma Cells/pathology
4.
An Bras Dermatol ; 91(5 suppl 1): 134-136, 2016.
Article in English | MEDLINE | ID: mdl-28300921

ABSTRACT

Porokeratosis is a skin disorder clinically characterized by annular plaques with keratotic borders resembling the Great Wall of China and histopathologically by cornoid lamellae. The disease has several clinical variants. Porokeratosis ptychotropica, which has recently become part of these variants, is quite rare and little known. The entity is characterized by verrucous plaques - which may resemble a psoriasis plaque - that affect the regions of the buttocks, most commonly the gluteal cleft, with or without extremity involvement. Itching is often present. We report a rare case of porokeratosis ptychotropica and highlight its unusual manifestation (single plaque), the first case reported in the Brazilian literature.


Subject(s)
Porokeratosis/pathology , Skin/pathology , Biopsy , Brazil , Buttocks/pathology , Erythema/pathology , Humans , Male , Pruritus , Young Adult
5.
São Paulo; Manole; 4 ed; 2015. 640 p. ilus, tab, graf.
Monography in Portuguese | Coleciona SUS | ID: biblio-943852
6.
Surg. cosmet. dermatol. (Impr.) ; 4(1): 10-16, jan.-mar. 2012. ilus, graf
Article in English, Portuguese | LILACS-Express | LILACS | ID: lil-684902

ABSTRACT

Introdução: O mecanismo de destruição da célula alvo na terapia fotodinâmica compreende a destruição celular direta, a injúria ao estroma vascular e a ativação do sistema imune. Objetivo: Estudar a resposta imune da pele humana fotoenvelhecida ao tratamento com terapia fotodinâmica. Métodos: Treze pacientes femininas foram submetidas a três sessões de tratamento com o ácido 5 delta aminolevulínico associado à luz de diodo de 630nm. Foi avaliada a resposta imunohistoquímica do sistema imunológico da pele por meio dos marcadores: anti-CD1a,anti-CD4+, anti-CD8+, anti-TNFa, anti-IFN¿ e anti-IL4; antes, 24 horas após a primeira sessão e 21 dias após a terceira sessão. Os dados foram analisados por meio de estatística descritiva: média, desvio padrão, valor mínimo e máximo, e mediana. Resultados: 21 dias após o ultimo tratamento houve diminuição do número de linfócitos CD4 e CD8, aumento de interleucina 4 na epiderme e derme, diminuição do TNF-a na epiderme e aumento na derme. A população de células Langerhans e do INF-¿ não mudou. Conclusão: Em relação ao sistema imune esta terapia não mostrou alteração das células de Langerhans e, por isso, pouca imunossupressão local. A apoptose dos linfócitos CD4 e CD8 foi evidenciada sugerindo que a terapia fotodinâmica possa ser útil em doenças inflamatórias. O estudo mostrou diminuição do TNFa na epiderme e aumento na derme além do aumento da IL4 em ambas, o que sugere resposta do tipo humoral neste protocolo, o que também pode ser evidenciado pela ausência do INFy.


Introduction: Photodynamic therapy destroys target cells by directly harming them, injuring the vascular stroma, and activating the immune system. Objective: To study photoaged skin's immune response to photodynamic therapy. Methods: Thirteen female patients underwent three treatment sessions with delta 5-aminolevulinic acid combined with 630 nm diode light. The immunohistochemical response of the skin's immune system was evaluated using the markers anti-CD1a, anti-CD4+, anti-CD8+, anti-TNFa, anti-IFNy and anti-IL4 before, 24 hours after the first session, and 21 days after the third session. Results: At the final evaluation, patients demonstrated a decrease in CD4 and CD8 lymphocytes, an increase in interleukin-4 in the epidermis and dermis, and a reduction and an increase of TNF-a in the epidermis and dermis, respectively. The Langerhans cell and INF-y populations remained unchanged. Conclusion: Regarding the immune system, photodynamic therapy did not cause changes in Langerhans cells; therefore, there was little local immunosuppression. CD4 and CD8 lymphocyte apoptosis was observed, suggesting that photodynamic therapy can be useful in treating inflammatory diseases. The changes in TNF-a and an increase of IL4 in the dermis and epidermis suggest a humoral type response, which was also evidenced by the absence of INFy.

7.
An. bras. dermatol ; An. bras. dermatol;86(6): 1129-1133, nov.-dez. 2011. ilus
Article in Portuguese | LILACS | ID: lil-610417

ABSTRACT

FUNDAMENTOS: A luz intensa pulsada tem sido muito utilizada no tratamento do fotoenvelhecimento sem completo conhecimento de seu mecanismo de ação. OBJETIVO: Estudar a ação da luz intensa pulsada no fotoenvelhecimento e na resposta imunológica cutânea por meio de estudo clínico, histopatológico, avaliando células de Langerhans (CD1), expressão da molécula de adesão intercelular, de linfócitos CD4 e CD8 e quantificação de colágeno e fibras elásticas. MÉTODOS: Um total de 26 pacientes, com idades entre 40 e 65 anos, com fototipos II a III de Fitzpatrick, foram tratadas do fotoenvelhecimento usando LIP, em 5 sessões, com intervalo mensal, durante o ano de 2006. Todas as pacientes foram submetidas à avaliação histológica e imuno-histoquímica 6 meses após o tratamento. RESULTADOS: Ao término do tratamento, houve melhora clínica em 76,92 por cento dos casos, estando relacionada ao aumento significante de fibras colágenas (51,33 por cento) e elásticas (44,13 por cento). O tratamento com luz intensa pulsada promoveu redução de linfócitos CD4 e não alterou a intensidade de linfócitos CD8. Além disso, promoveu aumento significante de pequenos vasos sanguíneos, não ectásicos, molécula de adesão intercelular positivos. CONCLUSÃO: O tratamento facial com luz intensa pulsada promoveu intensa melhora clínica que foi comprovada pelo estudo histopatológico da pele, constituindo boa opção de tratamento para o fotoenvelhecimento cutâneo, por ser técnica não- ablativa, segura e eficaz.


BACKGROUND: Intense pulsed light has been used in the treatment of photoaging without a full understanding of its mechanism of action. OBJECTIVE: To study the effect of intense pulsed light on photoaging and on the skin immune response by means of a clinical and histopathological study, evaluating Langerhans cells (CD1), expression of intercellular adhesion molecule, of CD4 and CD8 lymphocytes and quantification of collagen and elastic fibers. METHODS: In 2006 a total of 26 patients, aged 40 to 65 years, with phototypes II to III (Fitzpatrick scale), were treated for photoaging using intense pulsed light in five sessions with a monthly interval. All the patients were subjected to histological and immunohistochemical evaluation 6 months after treatment. RESULTS: At the end of the treatment clinical improvement was observed in 76.92 percent of cases. This improvement was associated to a significant increase of collagen (51.33 percent) and elastic (44.13 percent) fibers. Intense pulsed light treatment led to a reduction of CD4 lymphocytes and did not alter the amount of CD8 lymphocytes. It also led to a significant increase of small, nonectatic blood vessels, positive intercellular adhesion molecule. CONCLUSION: Facial treatment with intense pulsed light promoted major clinical improvement that was confirmed by histological examination of the skin. This technique is a good treatment option for skin photoaging because it is non-ablative, safe and effective.


Subject(s)
Adult , Female , Humans , Middle Aged , Collagen/biosynthesis , Phototherapy/methods , Rejuvenation , Skin Aging/pathology , Skin/pathology , Biopsy , Dermis/radiation effects , Elastic Tissue/radiation effects , Skin/radiation effects , Treatment Outcome
8.
RBM rev. bras. med ; RBM rev. bras. med;68(3,supl.)ago. 2011.
Article in Portuguese | LILACS | ID: lil-604841

ABSTRACT

Introdução: O melanoma é a mais agressiva das neoplasias cutâneas. O entendimento de seu comportamento e o correto diagnóstico permitindo tratamento precoce pode atuar para diminuir a mortalidade. Objetivos: Entender a incidência e o comportamento histopatológico do melanoma maligno cutâneo em quatro hospitais da cidade de São Paulo, sendo um privado e três públicos. Métodos: Comparou-se as características clínicas e anatomopatológicas de 42 pacientes com diagnóstico de melanoma procedentes de serviços do Complexo Hospitalar Edmundo Vasconcelos (CHEV) com outros três serviços de referência em São Paulo: Santa Casa de São Paulo, Hospital do Servidor Público Estadual de São Paulo, Hospital A.C. Camargo. As variáveis analisadas foram: sexo, tipo histológico da neoplasia; o nível de Clark na peça do anatomopatológico e a profundidade de Breslow. Resultados: 54,76% eram do tipo extensivo superficial, 26,19% nodular, 4,76% acral e 2,38% lentigo maligno. Quanto ao nível de Clark, 16,66% nível I, 42,85% nível II, 19,07% nível III e 7,14% nível IV. Quanto ao Breslow, 66,66% nível I, 11,90% níveI II, 7,14% nível III e 14,28% nível IV. Na amostra estudada as mulheres significaram 61,91%. Conclusão: O tipo extensivo superficial foi o mais prevalente, de espessura Breslow nível I e nível de Clark II.

10.
Surg. cosmet. dermatol. (Impr.) ; 3(1): 23-27, mar. 2011. ilus, graf
Article in Portuguese | LILACS-Express | LILACS | ID: lil-602554

ABSTRACT

Introdução: A hiperidrose é uma doença caracterizada pela transpiração excessiva e descontrolada, sendo a toxina botulínica o tratamento mais atual. Objetivo: A toxina botulínica do tipo A age através do bloqueio transitório da liberação da acetilcolina nas fibras colinérgicas autônomas, reduzindo a transpiração. O emprego desse tratamento tem aumentado à medida que os pacientes reconhecem a eficácia da substância. Métodos: Sete pacientes foram tratados com uma dose total de 100U de toxina botulínica. Os resultados foram avaliados com base nas opiniões dos pacientes e dos médicos, e em fotografias digitais analizadas por sistema Image Pro®. Resultados: Os pacientes apresentaram, em média, uma melhora clínica da hiperidrose da ordem de 73%. O processo foi documentado fotograficamente. Conclusões: Não há necessidade da utilização de doses altas de toxina botulínica para a obtenção de bons resultados.vitiligo; avaliação; protetores de raios solares.

11.
Surg. cosmet. dermatol. (Impr.) ; 3(1): 71-73, mar. 2011. ilus
Article in Portuguese | LILACS-Express | LILACS | ID: lil-602564

ABSTRACT

As cicatrizes inestéticas alargadas ou hipertróficas periauriculares podem ser decorrentes da tensão sobre a sutura das incisões da ritidoplastia. Em estudo retrospectivo de cinco anos, 10 pacientes do sexo feminino portadoras de cicatrizes inestéticas foram tratadas com a técnica do anel periauricular. Utilizou-se o fio de politetrafluoretileno em seis casos e o de mononylon 2-0 duplo em quatro casos, introduzidos com agulha de fáscia lata sem bisel. Após a exerese da cicatriz, as bordas foram aproximadas, e o anel amarrado e fixado na fáscia do músculo temporal. O resultado foi satisfatório. Em dois casos os fios foram removidos sem alteração do resultado estético final das cicatrizes.

12.
An Bras Dermatol ; 86(6): 1129-33, 2011.
Article in English, Portuguese | MEDLINE | ID: mdl-22281900

ABSTRACT

BACKGROUND: Intense pulsed light has been used in the treatment of photoaging without a full understanding of its mechanism of action. OBJECTIVE: To study the effect of intense pulsed light on photoaging and on the skin immune response by means of a clinical and histopathological study, evaluating Langerhans cells (CD1), expression of intercellular adhesion molecule, of CD4 and CD8 lymphocytes and quantification of collagen and elastic fibers. METHODS: In 2006 a total of 26 patients, aged 40 to 65 years, with phototypes II to III (Fitzpatrick scale), were treated for photoaging using intense pulsed light in five sessions with a monthly interval. All the patients were subjected to histological and immunohistochemical evaluation 6 months after treatment. RESULTS: At the end of the treatment clinical improvement was observed in 76.92% of cases. This improvement was associated to a significant increase of collagen (51.33%) and elastic (44.13%) fibers. Intense pulsed light treatment led to a reduction of CD4 lymphocytes and did not alter the amount of CD8 lymphocytes. It also led to a significant increase of small, nonectatic blood vessels, positive intercellular adhesion molecule. CONCLUSION: Facial treatment with intense pulsed light promoted major clinical improvement that was confirmed by histological examination of the skin. This technique is a good treatment option for skin photoaging because it is non-ablative, safe and effective.


Subject(s)
Collagen/biosynthesis , Phototherapy/methods , Rejuvenation , Skin Aging/pathology , Skin/pathology , Adult , Biopsy , Dermis/radiation effects , Elastic Tissue/radiation effects , Female , Humans , Middle Aged , Skin/radiation effects , Treatment Outcome
13.
RBM rev. bras. med ; RBM rev. bras. med;67(supl.4)jul. 2010.
Article in Portuguese | LILACS | ID: lil-555292

ABSTRACT

Fundamentos: A pitiríase alba (PA) é uma dermatose de etiologia não estabelecida, autolimitada, assintomática e de bom prognóstico. Caracteriza-se por lesões hipocrômicas, sendo um achado frequente da dermatite atópica. Objetivo: Estudar a prevalência da PA em crianças com dermatite atópica, de acordo com a cor da pele, classificada por fototipos. Metódos: Foram avaliados 62 prontuários de crianças com dermatite atópica, no período de março de 2008 a outubro de 2008. Estes pacientes foram classificados de acordo com o fototipo e avaliados quanto à presença ou não de ptiríase alba. Os dados obtidos foram submetidos à análise estatística. Resultados: Não houve prevalência da PA em relação ao sexo e a média da idade foi de 6,15 anos. A maioria dos pacientes (53,2%) apresentava lesões compatíveis com PA. Quanto ao fototipo, 62,9% eram fototipo 3, seguido por fototipo 4 (22,5%). Houve maior prevalência de PA nos fototipos 4 e 5 (82%) e a análise estatística demonstrou que esses pacientes têm seis vezes mais chance de manifestarem PA do que as crianças com fototipos 2 e 3. A associação entre o fototipo e a manifestação de PA foi estatisticamente significativa (p=0,0047). Todas as crianças avaliadas tinham xerose de leve a moderada. Conclusão: A pitiríase alba guarda importante relação com o fototipo do paciente atópico, independente da gravidade do quadro ou da presença de xerose.


Subject(s)
Humans , Male , Female , Child, Preschool , Child , Dermatitis, Atopic/diagnosis , Skin Pigmentation , Pityriasis/diagnosis , Pityriasis/pathology , Skin Diseases
14.
Rev Inst Med Trop Sao Paulo ; 50(6): 333-7, 2008.
Article in English | MEDLINE | ID: mdl-19082374

ABSTRACT

American tegumentary leishmaniasis presents as two major clinical forms: localized cutaneous leishmaniasis (LCL) and mucocutaneous leishmaniasis (MCL). The immune response in leishmaniasis is efficiently evaluated by the response to Leishmania antigen through the Montenegro skin test (MST). Both LCL and MCL present positive response to MST, indicating that the patients present cell-mediated immunity against the parasite - Leishmania. In spite of the presence of immunity in MCL, this is not sufficient to stop disease progression and prevent resistance to treatment. In this study we demonstrated interleukin (IL) 2, 4, 5 and interferon (IFN) gamma expression in biopsies of MST of ten patients with American tegumentary leishmaniasis. The obtained results were compared between LCL (n = 5) and MCL (n = 5) patients. The MST of MCL patients displayed a higher expression of IL-2, IL-4 and IL-5, in comparison to LCL. There was no significant difference in IFN-gamma expression between groups. The obtained results suggest the role of IL-4 and IL-5 in the maintenance of the immunopathogenic mechanism of the destructive lesions that characterize MCL.


Subject(s)
Interferon-gamma/analysis , Interleukins/analysis , Leishmaniasis, Cutaneous/immunology , Adult , Aged, 80 and over , Animals , Female , Humans , Immunohistochemistry , Intradermal Tests , Leishmaniasis, Mucocutaneous/immunology , Middle Aged , Young Adult
15.
Rev. Inst. Med. Trop. Säo Paulo ; Rev. Inst. Med. Trop. Säo Paulo;50(6): 333-337, Nov.-Dec. 2008. tab
Article in English | LILACS | ID: lil-499795

ABSTRACT

American tegumentary leishmaniasis presents as two major clinical forms: localized cutaneous leishmaniasis (LCL) and mucocutaneous leishmaniasis (MCL). The immune response in leishmaniasis is efficiently evaluated by the response to Leishmania antigen through the Montenegro skin test (MST). Both LCL and MCL present positive response to MST, indicating that the patients present cell-mediated immunity against the parasite - Leishmania. In spite of the presence of immunity in MCL, this is not sufficient to stop disease progression and prevent resistance to treatment. In this study we demonstrated interleukin (IL) 2, 4, 5 and interferon (IFN) gamma expression in biopsies of MST of ten patients with American tegumentary leishmaniasis. The obtained results were compared between LCL (n = 5) and MCL (n = 5) patients. The MST of MCL patients displayed a higher expression of IL-2, IL-4 and IL-5, in comparison to LCL. There was no significant difference in IFN-gamma expression between groups. The obtained results suggest the role of IL-4 and IL-5 in the maintenance of the immunopathogenic mechanism of the destructive lesions that characterize MCL.


A leishmaniose tegumentar americana apresenta duas formas clínicas mais comuns: a leishmaniose cutânea localizada e a leishmaniose cutâneo-mucosa. A imunidade da leishmaniose é avaliada pela resposta ao antígeno Leishmania através da Intradermorreação de Montenegro. Estas duas formas apresentam resposta positiva, indicando que o paciente apresenta imunidade celular contra o parasita Leishmania. Apesar da presença da imunidade celular na leishmaniose cutâneo-mucosa, esta não é suficiente para barrar a progressão da doença e a resistência ao tratamento. Neste estudo, detectamos quatro citocinas por imunohistoquímica, IL-2, IL-4, IL-5 e IFN-gama nas biópsias da intradermorreação de Montenegro de pacientes com leishmaniose tegumentar americana (n = 10), cinco com leishmaniose cutânea e cinco com cutâneo-mucosa. Os resultados mostraram uma alta expressão significativa de IL-2, IL-4, IL-5 na leishmaniose cutâneo-mucosa comparada com a leishmaniose cutânea localizada, mas sem diferença significante na expressão do IFN-γ entre os grupos. Estes resultados sugerem a importância da participação da citocina IL-4 e IL-5 na manutenção do mecanismo imunopatogênico das lesões destrutivas da forma cutâneo-mucosa.


Subject(s)
Adult , Aged, 80 and over , Animals , Female , Humans , Middle Aged , Young Adult , Interferon-gamma/analysis , Interleukins/analysis , Leishmaniasis, Cutaneous/immunology , Immunohistochemistry , Intradermal Tests , Leishmaniasis, Mucocutaneous/immunology , Young Adult
16.
Rev Inst Med Trop Sao Paulo ; 50(5): 283-6, 2008.
Article in English | MEDLINE | ID: mdl-18949347

ABSTRACT

This work analyzed the histopathology and epidermal Langerhans cells (LC) of Montenegro skin test (MST) in patients with American tegumentary leishmaniasis (ATL) in order to in situ characterize and compare the immunological reaction of the two major clinical forms of ATL, localized cutaneous leishmaniasis (LCL) and mucocutaneous leishmaniasis (MCL). MST histopathology of both LCL and MCL showed superficial and deep perivascular inflammatory infiltrate composed mainly of lymphocytes and histiocytes. Epidermal LC population was higher in MST biopsies taken from LCL patients when compared to MCL group, at 48 and 72 hours after antigen inoculation. Increased number of epidermal LC displayed in MST biopsies of LCL patients represents specific cellular immunity against parasites. The decrease of LC in MST biopsies of MCL patients does not necessarily indicate a worse specific cellular immunity in this clinical form of leishmaniasis.


Subject(s)
Langerhans Cells/immunology , Leishmaniasis, Cutaneous/parasitology , Skin Tests/methods , Animals , Humans , Leishmaniasis, Cutaneous/immunology , Leishmaniasis, Cutaneous/pathology , Leishmaniasis, Mucocutaneous/immunology , Leishmaniasis, Mucocutaneous/parasitology , Leishmaniasis, Mucocutaneous/pathology
17.
Rev. Inst. Med. Trop. Säo Paulo ; Rev. Inst. Med. Trop. Säo Paulo;50(5): 283-286, Sept.-Oct. 2008. tab
Article in English | LILACS | ID: lil-495764

ABSTRACT

This work analyzed the histopathology and epidermal Langerhans cells (LC) of Montenegro skin test (MST) in patients with American tegumentary leishmaniasis (ATL) in order to in situ characterize and compare the immunological reaction of the two major clinical forms of ATL, localized cutaneous leishmaniasis (LCL) and mucocutaneous leishmaniasis (MCL). MST histopathology of both LCL and MCL showed superficial and deep perivascular inflammatory infiltrate composed mainly of lymphocytes and histiocytes. Epidermal LC population was higher in MST biopsies taken from LCL patients when compared to MCL group, at 48 and 72 hours after antigen inoculation. Increased number of epidermal LC displayed in MST biopsies of LCL patients represents specific cellular immunity against parasites. The decrease of LC in MST biopsies of MCL patients does not necessarily indicate a worse specific cellular immunity in this clinical form of leishmaniasis.


Este trabalho analisou e quantificou as células de Langerhans e as características histopatológicas da reação de Montenegro nos pacientes com leishmaniose tegumentar americana (LTA) para caracterizar seu comportamento imunológico nas duas formas clínicas mais comuns da LTA, a leishmaniose cutânea localizada (LCL) e a leishmaniose cutâneo-mucosa (LCM). O exame histopatológico apresentou infiltrado inflamatório perivascular superficial e profundo, com predomínio de histiócitos e linfócitos, sem diferença significante entre as duas formas da doença. O resultado da quantificação das CL apresentou aumento das CL na LCL e diminuição na LCM em 48 e 72 horas após a inoculação do antígeno (p < 0,001). O aumento das células de Langerhans epidérmicas na reação de Montenegro da LCL demonstra a presença de imunidade celular específica, enquanto a diminuição das mesmas células na LCM não necessariamente demonstra uma diminuição da imunidade celular específica.


Subject(s)
Animals , Humans , Langerhans Cells/immunology , Leishmaniasis, Cutaneous/parasitology , Skin Tests/methods , Leishmaniasis, Cutaneous/immunology , Leishmaniasis, Cutaneous/pathology , Leishmaniasis, Mucocutaneous/immunology , Leishmaniasis, Mucocutaneous/parasitology , Leishmaniasis, Mucocutaneous/pathology
19.
An. bras. dermatol ; An. bras. dermatol;82(5): 425-431, set.-out. 2007. ilus, tab
Article in Portuguese | LILACS | ID: lil-471168

ABSTRACT

FUNDAMENTOS: O tumor glômico subungueal é neoplasia benigna de células glômicas. É mais freqüentemente observado como lesão solitária na falange distal dos quirodáctilos, representando de um a 4,5 por cento das neoplasias das mãos. OBJETIVO: Avaliar os aspectos epidemiológicos e clínicos, os exames complementares, bem como prognóstico e tratamento com base em exames histopatológicos e métodos de imagem. MÉTODO: Foram estudados 20 casos de tumor glômico subungueal ocorridos no período de 1991 a 2003, nos ambulatórios de Dermatologia do Hospital das Clínicas e do Hospital do Servidor Público Municipal de São Paulo. RESULTADOS: Os achados epidemiológicos deste estudo não diferiram significativamente do levantamento bibliográfico pesquisado. Confirmaram-se, na casuística analisada, preferência pelos quirodáctilos e maior acometimento em pacientes do sexo feminino. Histologicamente, os dados obtidos foram similares aos existentes na literatura. CONCLUSÕES: Os métodos de imagem não foram utilizados de maneira sistemática como auxiliares diagnósticos do tumor glômico, embora sejam de grande importância na confirmação e delimitação do tumor, especialmente a ressonância magnética de alta definição. As recidivas, consideradas raras, ocorreram em 15 por cento dos casos, enfatizando a necessidade de acompanhamento pós-cirúrgico prolongado.


BACKGROUND: The subungual glomus tumor is a benign neoplasm of glomus cells, most frequently observed as a unique lesion on distal phalanx of fingers, and represents from 1 to 4.5 percent of hand neoplasms. OBJECTIVE: To evaluate the epidemiological and clinical aspects and diagnostic exams, such as histopathology and imaging methods. METHOD: Twenty cases of glomus tumor seen at the Dermatology Outpatient´s Clinics of Hospital das Clínicas and Hospital do Servidor Público Municipal of São Paulo, from 1991 to 2003, were studied. RESULTS: The epidemiological findings of this study did not significantly differ from the bibliographic search carried out. The preference for fingers and greater prevalence in women were confirmed in the patients observed. The histological data were similar to those in the literature. CONCLUSIONS: The imaging methods were not used in a systematic manner in diagnosis of glomus tumor, but they are very helpful to confirm and circumscribe the tumor, especially high definition magnetic resonance imaging. Although rare, relapses occurred in 15 percent of cases; thus there is no need for a prolonged surgical follow-up.

20.
Dermatol Surg ; 33(2): 178-88; discussion 188-9, 2007 Feb.
Article in English | MEDLINE | ID: mdl-17300603

ABSTRACT

BACKGROUND: Phosphatidylcholine injections have been used as a nonsurgical alternative to the surgical removal of undesired fat. Studies in cell culture suggest that sodium deoxycholate (SD) has a detergent action in fat reduction. OBJECTIVE: The objective was to study SD in subcutaneous human tissue. METHODS AND MATERIALS: Thirty volunteers underwent four sessions of subcutaneous abdominal injections of diluted 2.5 or 1% SD stock solutions or placebo. Clinical, hematologic, and ultrasonographic evaluations were performed for 3 months and histology at 3 and 6 months. RESULTS: Both concentrations of SD induced an inflammatory response at the injection site, with dose-dependent adipocyte lysis. Patients reported mild, localized heat, erythema, swelling, and intense pain. Microscopic evaluation revealed necrosis of adipose tissue with adipocyte lysis, fat dissolution, acute lymphomononuclear inflammatory reaction, and intense phagocytosis of fat cells by macrophages. Fibrosis was observed only at the 6-month biopsy. Nodules at the injection sites, compatible with areas of inflammation, were detected by ultrasonography 2 weeks after the first injection. Placebo injections induced no histologic changes. CONCLUSIONS: SD induces an inflammatory reaction in subcutaneous human fat and dose-dependent adipocyte lysis with acute pain and fibrosis. No systemic effects were detected. Further studies will establish the best dose-result ratio, frequency of application, and long-term safety.


Subject(s)
Adipose Tissue/drug effects , Deoxycholic Acid/pharmacology , Detergents/pharmacology , Subcutaneous Tissue/drug effects , Adipose Tissue/diagnostic imaging , Adult , Aged , Deoxycholic Acid/administration & dosage , Detergents/administration & dosage , Female , Humans , Injections, Subcutaneous , Middle Aged , Subcutaneous Tissue/diagnostic imaging , Surveys and Questionnaires , Treatment Outcome , Ultrasonography
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