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1.
Acta cir. bras ; 34(10): e201901007, Oct. 2019. tab, graf
Article in English | LILACS | ID: biblio-1054673

ABSTRACT

Abstract Purpose: To conduct a scope review of the experimental model described by Walker and Mason, by identifying and analyzing the details of the method. Methods: The authors searched Pubmed-Medline, Cochrane-Bireme and PEDro databases for articles published between January 2016 and December 2018, using the following search queries: burns, burn injuries, models animal, and animal experimentation. All articles whose authors used Walker and Mason's model - with or without changes to the method in Wistar rats - were included in this study. Results: The search identified 45 mentions of Walker and Mason's model; however, after reading each summary, 20 were excluded (of which 5 due to duplicity). The inconsistencies observed after the scope review were: water temperature, length of time of exposure of the experimental model's skin to water, extent of the burnt area, and the description of the thickness/depth of the injury. Conclusions: Reproducibility of a scientific method is the basis to prove the veracity of the observed results. Thus, it is necessary to have a greater number of publications that adopt a reproducible scientific method, for this review found inconsistencies in the description of Walker and Mason's model.


Subject(s)
Animals , Burns/etiology , Disease Models, Animal , Hot Temperature , Skin/injuries , Time Factors , Water , Reproducibility of Results
2.
Rev. bras. cir. plást ; 33(3): 423-427, jul.-set. 2018. ilus
Article in English, Portuguese | LILACS | ID: biblio-965628

ABSTRACT

Introdução: A incidência de queimaduras em gestantes não é bem estabelecida na literatura mundial, mas estima-se que varie entre 3% e 7%. Os cuidados da gestante queimada representam um grande desafio com impacto significante nos resultados e prognóstico materno-fetais. Relato de Caso: No presente estudo relatamos dois casos de gestantes vítimas de queimaduras que foram tratadas na unidade de tratamento de queimaduras na Escola Paulista de Medicina da Universidade Federal de São Paulo (EPM/UNIFESP), uma no primeiro trimestre e a outra no terceiro trimestre. Conclusão: Em ambos os casos, as gestantes receberam tratamento especializado para queimaduras em conjunto com acompanhamento clínico da equipe da obstetrícia, com boa evolução materno-fetal.


Introduction: The incidence of burns involving pregnant women is not well established in the literature, but is estimated to be between 3% and 7%. The management of burns in pregnancy represents a great challenge with significant impact on outcomes and maternal-fetal prognosis. Case Report: In the present study, we report two cases of pregnant burn victims who were treated in the burn unit in the Paulista School of Medicine, Federal University of São Paulo (EPM/UNIFESP). One patient was treated in the first trimester and the other in the third trimester. Conclusion: In both cases, the pregnant women received specialized treatment for burns in conjunction with clinical follow-up by the obstetrics team, with good maternal-fetal outcomes.


Subject(s)
Humans , Female , Adult , Pregnancy Complications/surgery , Surgical Procedures, Operative/methods , Surgical Procedures, Operative/rehabilitation , Transplantation/methods , Wounds and Injuries , Hypovolemia/diagnosis , Fetus/surgery , Patients , Burn Units , Pregnancy , Pregnancy, High-Risk
3.
Rev. Col. Bras. Cir ; 45(4): e1715, 2018. tab, graf
Article in Portuguese | LILACS | ID: biblio-956577

ABSTRACT

RESUMO Objetivo: avaliar as características dos pacientes portadores de melanoma cutâneo atendidos no Hospital São Paulo - UNIFESP. Métodos: estudo retrospectivo de 184 casos de melanoma cutâneo. Foram analisadas as informações sobre sexo, idade, características do tumor, características histológicas e estadiamento. Resultados: a média de idade ao diagnóstico foi de 58,7 anos, com distribuição etária homogênea entre os sexos e predominância em indivíduos brancos (70,6%). Observou-se acometimento predominante de tronco, em homens (36,7%), e de membros inferiores, em mulheres (42%). A exposição solar, com queimaduras, foi mais comum entre homens (31,2%) do que entre mulheres (23,5%). Houve aumento de aproximadamente três vezes no acometimento linfonodal quando o índice mitótico subia de zero (11,9%) para uma ou mais mitoses por campo (36,2%), e aumento progressivo do acometimento linfonodal e de desfechos ruins quanto maior a espessura de Breslow: 10,2% quando menor do que 1mm e 59,2% quando maior do que 4mm. Conclusão: as características dos pacientes portadores de melanoma cutâneo atendidos no Hospital São Paulo são semelhantes às encontradas na literatura.


ABSTRACT Objective: to evaluate the characteristics of the patients with cutaneous melanoma treated at the São Paulo Hospital - UNIFESP. Methods: we conducted a retrospective study of 184 cases of cutaneous melanoma. We analyzed information on gender, age, tumor characteristics, histological characteristics and staging. Results: mean age at diagnosis was 58.7 years, with homogeneous age distribution between genders and predominance in white individuals (70.6%). There was a predominance of trunk involvement in men (36.7%) and lower limbs in women (42%). Sun exposure, with sunburns, was more common among males (31.2%) than among females (23.5%). There was an approximately three-fold increase in lymph node involvement when the mitotic index rose from zero (11.9%) to one or more mitosis per field (36.2%). In addition, the greater the Breslow thickness, the greater the lymph node involvement and poor the outcomes: 10.2% when less than 1mm and 59.2% when greater than 4mm. Conclusion: the characteristics of patients with cutaneous melanoma treated at Hospital São Paulo are similar to those found in the literature.


Subject(s)
Humans , Male , Female , Skin Neoplasms/epidemiology , Melanoma/epidemiology , Sunburn , Brazil/epidemiology , Retrospective Studies , Risk Factors , Sex Distribution , Age Distribution , Lymph Nodes , Middle Aged , Mitosis
4.
Rev. bras. cir. plást ; 32(2): 245-251, 2017. ilus
Article in English, Portuguese | LILACS | ID: biblio-847378

ABSTRACT

Introdução: A mão representa 3% da superfície corporal total, porém seu envolvimento em trauma grave, como uma queimadura, pode levar a sequelas funcionais graves. O presente estudo descreve os procedimentos no atendimento de pacientes na fase aguda com queimaduras envolvendo as mãos. Métodos: 122 pacientes com queimaduras térmicas envolvendo uma ou ambas as mãos foram incluídos no estudo, entre agosto de 2011 a julho de 2014. No exame físico inicial, determinou-se a extensão e a profundidade da lesão; as queimaduras profundas e circulares, com sinais e sintomas de perfusão inadequada, tiveram escarotomias realizadas para evitar perda de extremidade. As queimaduras de espessura parcial profunda ou de espessura total no dorso das mãos foram submetidas à excisão tangencial até 5 dias após o trauma; e o enxerto de pele parcial foi realizado em todos os pacientes antes do 15º dia do trauma. Resultados: Os homens representaram a maioria (58% da casuística). Em relação ao agente das queimaduras, os líquidos inflamáveis corresponderam a 46,7% das internações. Em 50,8% dos casos, as queimaduras eram de espessura parcial profunda ou de espessura total e necessitaram de procedimento operatório. Não foi identificada perda de enxerto no grupo. As escarotomias foram realizadas em 12,3% dos pacientes. Conclusão: A mão queimada necessita de atenção e cuidados locais adequados, juntamente com excisão precoce e enxertia de pele.


Introduction: The hand represents 3% of total body surface, but its involvement in severe trauma, such as burns, can lead to serious functional sequelae. The present study describes procedures in the care of patients in the acute phase with burns involving the hands. Methods: 122 patients with thermal burns involving one or both hands were included in the study between August 2011 and July 2014. On initial physical examination, the extent and depth of the lesions were determined; deep and circular burns, with signs and symptoms of inadequate perfusion, had escharotomies performed to avoid the loss of extremity. Burns of partial deep thickness or full thickness on the back of the hands received tangential excision within 5 days after the trauma; partial skin grafting was performed on all patients before the 15th day of the trauma. Results: Men represented the majority of cases (58%). In relation to the burn agent, flammable liquids caused 46.7% of admissions. In 50.8% of the cases, the burns were of partial deep thickness or of total thickness and required an operative procedure. No graft loss was identified in the group. Escharotomies were performed in 12.3% of the patients. Conclusion: The burned hand needs proper local attention and care, along with early excision and skin grafting.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , History, 21st Century , Patients , Personal Satisfaction , Wounds and Injuries , Burns , Tissue Transplantation , Skin Transplantation , Plastic Surgery Procedures , Free Tissue Flaps , Hand , Wounds and Injuries/surgery , Wounds and Injuries/therapy , Burns/surgery , Burns/therapy , Tissue Transplantation/rehabilitation , Skin Transplantation/methods , Plastic Surgery Procedures/methods , Plastic Surgery Procedures/rehabilitation , Transplants/surgery , Free Tissue Flaps/surgery , Hand/surgery
5.
Rev. bras. cir. plást ; 30(1): 86-92, 2015. ilus, tab
Article in English, Portuguese | LILACS | ID: biblio-885

ABSTRACT

INTRODUÇÃO: As queimaduras são traumas graves, que geram 100 mil atendimentos hospitalares por ano, no Brasil. As Unidades de Queimados são fundamentais para o tratamento desses pacientes e a produção de conhecimento sobre o tema. MÉTODO: O estudo estabeleceu o perfil de atendimento em cada ano de funcionamento da unidade no período de 2009 a 2012, e comparou, entre esses anos, a quantidade de pacientes internados, a procedência, os graus de queimadura, a idade, a superfície corporal queimada, os dias de internação, os tipos de procedimentos cirúrgicos, os agentes e a mortalidade. Para avaliação das possíveis associações, foi utilizado o teste do Qui-quadrado. RESULTADOS: Foram internados 321 pacientes. Em 2009, 70% dos pacientes apresentavam queimadura de II grau e, em 2012, 66% dos pacientes tinham queimadura de III grau. Em 2009, 37% vieram referenciados de outros serviços, e em 2012, 72%. A idade média dos pacientes foi de 29 anos em 2009 e 44 anos, em 2012. A superfície corporal queimada no início era de 13%, e em 2012, foi 8%. O tempo de internação subiu de 11 para 21 dias. Em 2009, realizaram-se 50 procedimentos cirúrgicos. Em 2012, foram 103. O agente causal mais encontrado foram os líquidos inflamáveis e a mortalidade global caiu de 7% para 4%, ao longo dos anos. CONCLUSÃO: Houve um aumento na quantidade de pacientes referenciados e complexos, com queimaduras de maior grau, exigindo mais procedimentos e maior hospitalização, ao longo dos anos. A taxa de mortalidade diminuiu, refletindo melhora técnica da Unidade, que se estabeleceu como referência regional no tratamento de queimados.


INTRODUCTION: Burns constitute severe trauma and account for 100,000 hospital visits per year in Brazil. Burns units are essential for the treatment of these patients and the generation of knowledge on this subject. METHOD: This study established the annual profile of burn unit attendance between 2009 and 2012. During these years of activity, we compared the number of hospitalized patients, patient origin, burn degree, age, burn body surface area, days of hospitalization, types of surgical procedures, agents, and mortality. Possible combinations were evaluated with the chi-square test. RESULTS: A total of 321 patients were hospitalized. In 2009, 70% of the patients presented secon-degree burns; in 2012, 66% of the patients presented third-degree burns. In 2009, 37% of the patients were referred to other services; in 2012, 72% were referred. The average patient age was 29 years old in 2009 and 44 years old in 2012. Burn body surface was 13% in 2009 and 8% in 2012. Hospitalization time increased from 11 to 21 days. A total of 50 surgical procedures were performed in 2009, while 103 were performed in 2012. Flammable liquids were the most commonly observed causal agents. The overall mortality rate decreased from 7% to 4% over the study period. CONCLUSION: There was an increase in the number of referred and complex patients with higher degree burns who required longer hospital stays and a greater number of procedures over the years. The decreased mortality rate reflected the technical improvement of the unit that was established as a regional reference for the treatment of burn victims.


Subject(s)
Humans , Male , Female , Adult , History, 21st Century , Surgical Procedures, Operative , Surgery, Plastic , Wounds and Injuries , Burn Units , Burns , Burns, Chemical , Epidemiology , Retrospective Studies , Evaluation Study , Surgical Procedures, Operative/methods , Surgical Procedures, Operative/statistics & numerical data , Surgery, Plastic/methods , Surgery, Plastic/statistics & numerical data , Wounds and Injuries/surgery , Burn Units/standards , Burns/surgery , Burns/therapy , Burns/epidemiology , Burns, Chemical/surgery , Burns, Chemical/therapy , Epidemiologic Studies , Epidemiology/statistics & numerical data
6.
São Paulo med. j ; 132(6): 372-376, Nov-Dec/2014. tab, graf
Article in English | LILACS | ID: lil-726381

ABSTRACT

CONTEXT: Electrical burns are an important etiology in dealing with patients suffering from burns. In situations of extensive deep lesions of multiple organs and systems affecting young and economically active people, there is a need for expensive multidisciplinary treatment, with a high socioeconomic cost for the community. Among the permanent injuries that explain this high cost, eye injuries stand out, since they are widely disabling. Although rare, lesions of the posterior segment of the eye are associated with higher incidence of major sequelae, and thus deserve special attention for dissemination and discussion of the few cases observed. CASE REPORT: The authors report the case of a patient who suffered high-voltage electrical burns and presented bilateral maculopathy, which evolved with a need for a surgical approach to repair retinal detachment and permanent low visual acuity. CONCLUSION: This report highlights the rarity of the etiology of maculopathy and the need for campaigns for prevention not only of burns in general, but also especially of electrical burns. .


CONTEXTO: As queimaduras elétricas representam etiologia importante na abordagem de pacientes vítimas de queimaduras. Lesões extensas e profundas de múltiplos órgãos e sistemas e o acometimento de população jovem economicamente ativa apontam para a necessidade de tratamento multidisciplinar dispendioso, com alto custo socioeconômico para as comunidades. Dentre as lesões permanentes que justificam esse alto custo, as oculares têm local de destaque, porque são amplamente incapacitantes. Embora raras, as lesões do segmento posterior do olho estão associadas a maior incidência de sequelas importantes, merecendo atenção especial para divulgação e discussão dos poucos casos observados. RELATO DE CASO: Os autores relatam o caso de paciente vítima de queimadura elétrica com fio de alta voltagem que apresentou maculopatia bilateral, evoluindo com necessidade de abordagem cirúrgica para correção de descolamento de retina e baixa acuidade visual permanente. CONCLUSÃO: Este relato destaca a raridade da etiologia da maculopatia e a necessidade de campanhas de prevenção não só das queimaduras em geral, mas especialmente das queimaduras elétricas. .


Subject(s)
Adult , Humans , Male , Burns, Electric/complications , Electric Injuries/complications , Retinal Diseases/surgery , Burns, Electric/therapy , Electric Injuries/therapy , Follow-Up Studies , Retinal Detachment/complications , Retinal Diseases/complications , Retinal Diseases/diagnosis , Tomography, Optical Coherence , Treatment Outcome , Visual Acuity
7.
Acta cir. bras ; 29(supl.1): 57-61, 2014. tab
Article in English | LILACS | ID: lil-720396

ABSTRACT

PURPOSE: To simulate a lymph node metastasis in an animal model using activated carbon, assess their identification in frozen section analysis and compare with histopathological examination in paraffin. METHODS: Thirty two adult female rats were used. They received the carbon injection on its hind legs. Half of the rats was sacrificed on day one, and the other half after 21 days. Thus, 64 lymph nodes were dissected and split longitudinally. One half of the lymph node was sent immediately to frozen section analysis. The other half was fixed in 10% formaldehyde to be cut in paraffin. Slides were divided into quadrants and classified by the presence of carbon in these four quadrants_ They were also classified by the carbon staining intensity. RESULTS: Comparing the slides obtained in the first day and 21 days, there was a tendency of carbon to spread over time, but without statistical significance. The intensity did not alter over time. CONCLUSION: There was no concordance between the two methods of pathological analysis, however the actived carbon was seen in all lymph nodes. .


Subject(s)
Animals , Female , Rats , Frozen Sections/methods , Lymph Nodes/pathology , Paraffin Embedding/methods , Sentinel Lymph Node Biopsy/methods , Charcoal , Disease Models, Animal , Lymphatic Metastasis/pathology , Melanoma/pathology , Melanoma/secondary , Reference Standards , Reproducibility of Results , Time Factors
8.
Acta cir. bras ; 29(supl.2): 15-20, 2014. graf
Article in English | LILACS | ID: lil-721379

ABSTRACT

PURPOSE: To propose an experimental burn model in NIH-3T3 cell line. METHODS: Induction of thermal injury in cultures of mouse fibroblast - NIH-3T3- cell line and determination of cell viability by MTT and imunofluorescence. RESULTS: The heating of the Petri dish increased proportionally to the temperature of the base and the time of exposure to microwave. In this in vitro burn model, using the cell line NIH-3T3 was observed drastic cellular injury with significant changes in cell viability and activity. It showed drastically modified cell morphology with altered membrane, cytoskeleton and nucleus, and low cellularity compared to the control group. CONCLUSION: The burn model in vitro using the cell line NIH-3T3 was reproductive and efficient. This burn model was possible to determine significant changes in cell activity and decreased viability, with drastic change in morphology, cell lysis and death. .


Subject(s)
Animals , Mice , Burns/pathology , Cell Culture Techniques/methods , Disease Models, Animal , Cell Survival , Fluorescent Antibody Technique , Formazans , Hot Temperature , In Vitro Techniques/methods , Microscopy, Confocal , Reproducibility of Results , Tetrazolium Salts , Time Factors
9.
Acta cir. bras ; 27(12): 855-860, dez. 2012. graf
Article in English | LILACS | ID: lil-657968

ABSTRACT

PURPOSE: To evaluate telomerase activity and proliferation of HS839.T melanoma cells, subjected to the action of AZT. METHODS: Cells were grown in triplicate, AZT at different concentrations: 50, 100 and 200μM, was added and left for 24 and 48 hours, and its effects were compared with the control group. Telomerase activity was detected by PCR and cell proliferation was evaluated by MTT. RESULTS: After 24 hours, there was no inhibition of cell proliferation or telomerase activity when compared to the control group. After 48 hours, there was a momentary decrease, suggesting that the cell lines used in this study are sensitive to AZT, but quickly recover both the enzyme activity and cell proliferation. CONCLUSION: The action of AZT on the melanoma cells studied, at the concentrations and times tested, did not inhibit telomerase activity nor affect cell proliferation.


OBJETIVO: Avaliar a atividade da telomerase e da proliferação de células de melanoma HS839.T submetidas à ação do AZT. MÉTODOS: As células foram cultivadas, em triplicata, com diferentes concentrações de AZT: 50, 100 e 200µM, por 24h e 48h, seus efeitos comparados com o grupo controle. A atividade da telomerase foi detectada por PCR e a proliferação celular avaliada por MTT. RESULTADOS: No tempo de 24 horas, não houve inibição da proliferação celular e da atividade da telomerase em comparação com o grupo controle. No período de 48 horas, houve uma diminuição momentânea, sugerindo que as células das linhagens utilizadas neste estudo são sensíveis ao AZT, mas que recuperam a atividade enzimática e proliferativa. CONCLUSÃO: Nas células de melanoma HS839.T estudadas e nas concentrações e tempos propostos, a ação do AZT não inibiu a atividade da telomerase e não afetou a proliferação celular.


Subject(s)
Adult , Female , Humans , Cell Proliferation/drug effects , Melanoma/pathology , Skin Neoplasms/pathology , Telomerase/metabolism , Zidovudine/pharmacology , Cell Line, Tumor , Dose-Response Relationship, Drug , Melanoma/enzymology , Skin Neoplasms/enzymology , Time Factors , Telomerase/antagonists & inhibitors , Zidovudine/administration & dosage
10.
Acta cir. bras ; 25(5): 434-439, Sept.-Oct. 2010. ilus, tab
Article in English | LILACS | ID: lil-558730

ABSTRACT

PURPOSE: To qualify the FT-Raman spectral data of primary and metastatic cutaneous melanoma in order to obtain a differential diagnosis. METHODS: Ten normal human skin samples without any clinical or histopathological alterations, ten cutaneous melanoma fragments, and nine lymph node metastasis samples were used; 105, 140 and 126 spectra were obtained respectively. Each sample was divided into 2 or 3 fragments of approximately 2 mm³ and positioned in the Raman spectrometer sample holder in order to obtain the spectra; a monochrome laser light Nd:YAG at 1064 nm was used to excite the inelastic effect. RESULTS: To differentiate the three histopathological groups according to their characteristics extracted from the spectra, data discriminative analysis was undertaken. Phenylalanine, DNA, and Amide-I spectral variables stood out in the differentiation of the three groups. The percentages of correctly classified groups based on Phenylalanine, DNA, and Amide-I spectral features was 93.1 percent. CONCLUSION: FT-Raman spectroscopy is capable of differentiating melanoma from its metastasis, as well as from normal skin.


OBJETIVO: Qualificar os dados espectrais FT-Raman do melanoma cutâneo primário e metastático e assim realizar o diagnóstico diferencial. MÉTODOS: Foram utilizadas amostras de 10 fragmentos de pele sem alterações clínicas ou histopatológicas, 10 de melanomas cutâneos e 9 de metástases linfonodais; 105, 140 and 126 espectros foram obtidos respectivamente. Cada amostra foi dividida em 2 ou 3 frações de 2 mm³ e posicionada no porta amostras do espectrômetro Raman para obtenção dos espectros, por meio da excitação do espalhamento inelástico pelo laser de Nd:YAG em 1064 nm incididos na amostra. RESULTADOS: Para diferenciar os três grupos formados de acordo com as características fornecidas pelos espectros, realizamos a análise discriminante dos dados. As variáveis espectrais Fenilalanina, DNA e Amida-I se destacaram na capacidade de diferenciação dos três grupos histológicos. A porcentagem de classificação correta utilizando estes critérios foi de 93,1 por cento; o que mostra a eficiência da análise realizada. CONCLUSÃO: A espectroscopia FT-Raman é capaz de diferenciar o melanoma de sua metástase, assim como da pele normal.


Subject(s)
Humans , Melanoma/diagnosis , Skin Neoplasms/diagnosis , Spectrum Analysis, Raman/standards , Amides/analysis , Diagnosis, Differential , DNA , Melanoma/chemistry , Melanoma/secondary , Phenylalanine/analysis , Skin Neoplasms/chemistry , Skin Neoplasms/pathology , Skin/chemistry , Spectrum Analysis, Raman/methods
11.
Acta cir. bras ; 25(4): 351-356, July-Aug. 2010. graf, tab, ilus
Article in English | LILACS | ID: lil-553243

ABSTRACT

Cutaneous melanoma is the most aggressive type of skin cancer and Ft-Raman spectroscopy has been studied as a potential method that could be a real alternative for early diagnosis of neoplasms. PURPOSE: To qualify the spectral FT-Raman data, in order to differentiate cutaneous melanoma and pigmented nevus. METHODS: For this study, 10 samples of cutaneous melanoma, 9 samples of pigmented nevi, and 10 samples of normal skin were obtained by incisional biopsies performed during plastic surgeries ex vivo, immediately after removing the surgical sample. RESULTS: The FT-Raman spectra of each group presented a high correlation between the elements of the same group, thus favoring the elaboration of spectral averages. When analyzing the spectral standard of each group, the normal skin standard did not show a significant variation between the spectra; the standard of the pigmented nevi group showed significant variation, and the cutaneous melanoma group also showed variation. Through univariate analysis, specific bands were detected for each vibrational mode identified. The discriminatory analysis of the data showed a 75.3 percent efficiency of the differentiation between the three groups studied. CONCLUSION: The vibrational modes Polysaccharides, Tyrosine and Amide-I differentiated the melanoma from the pigmented nevus.


O melanoma cutâneo é o câncer de pele mais agressivo, e a espectroscopia FT-Raman tem sido estudada como um método em potencial que pode ser uma verdadeira alternativa no diagnóstico precoce de neoplasias. OBJETIVO: Qualificar os dados espectrais FT-Raman de modo a diferenciar melanoma cutâneo de nevo pigmentado. MÉTODOS: Foram utilizadas 10 amostras de melanoma cutâneo, obtidas por meio de biopsias incisionais realizadas "ex-vivo"; nove amostras de nevo pigmentado e 10 amostras de pele normal foram coletadas durante cirurgias plásticas. RESULTADOS: Os espectros FT-Raman de cada grupo diagnóstico apresentaram alta correlação entre os elementos do mesmo grupo, o que favoreceu a realização das médias espectrais. Analisando o padrão espectral de cada grupo, o de pele normal não mostrou grande variação entre os espectros; o de nevo pigmentado apresentou variação notável e, o grupo melanoma primário também indicou variação. Por meio de análise univariada foram identificadas bandas específicas para cada modo vibracional identificado. A análise discriminante aos dados mostrou 75,3 por cento de eficiência na diferenciação entre os três grupos estudados. CONCLUSÃO: Os modos vibracionais Polissacarídeos (Banda I), Tirosina (Banda 6) e Amida I (Banda 10) diferenciaram o melanoma do nevo pigmentado.


Subject(s)
Humans , Melanoma/pathology , Nevus, Pigmented/pathology , Skin Neoplasms/pathology , Analysis of Variance , Biopsy , Diagnosis, Differential , Spectroscopy, Fourier Transform Infrared/methods , Spectrum Analysis, Raman/methods
12.
Rev. bras. queimaduras ; 9(3): 82-88, 2010.
Article in Portuguese | LILACS | ID: biblio-1390624

ABSTRACT

Introdução: Queimadura é um grave trauma, com repercussões sociais, econômicas e de saúde pública, que tem seu tratamento custeado basicamente pelo poder público, e necessita de dados epidemiológicos para a correta gestão pública e para campanhas de prevenção. Objetivo: Traçar o perfil epidemiológico dos pacientes atendidos na unidade de tratamento de queimaduras (UTQ) da Universidade Federal de São Paulo (UNIFESP). Método: Os dados foram coletados nos 12 primeiros meses de funcionamento, de julho de 2009 a junho de 2010. O estudo analisou o total de internações por mês; tipo de internação; sexo; idade; procedência; agente da queimadura; classificação quanto à extensão, gravidade do caso; SCQ; taxa de ocupação; período de internação; média mensal de cirurgias; tentativa de suicídio; lesão inalatória; taxa de mortalidade; solicitação de vagas e atendimento ambulatorial. Resultados: Dos 101 pacientes internados nesse período, 69,3% foram do sexo masculino, com média de internação mensal de 8,3 dias. A média da idade foi de 33,7 anos (11 meses a 90 anos). Líquido inflamável (40,6%) foi o mais frequente, álcool líquido (31,3%), seguido de líquido aquecido (25,7%). Pequeno queimado em 61,4%, com SCQ média de 11,3% (1 a 77,5%). A média mensal de cirurgias foi de 9,1, sendo que foram realizadas precocemente, entre 3 e 5 dias após a queimadura; 4,95% foram causadas por tentativa de suicídio, 10,9% apresentavam lesão inalatória na internação e 5,94% de taxa de mortalidade. Conclusão: Houve predomínio do sexo masculino, das queimaduras de segundo grau misto e de menor extensão. A mortalidade foi relacionada à presença da lesão inalatória.


Background: Burns is a serious trauma, affecting social, economic and public health, which has basically funded their treatment by the government, and needs of epidemiological data for the correct management and publishing for prevention. Purpose: Describe the epidemiological profile of patients treated at the UNIFESP burn care unit. Methods: Data were collected from July 2009 to June 2010. The study evaluated the total number of admissions per month, type of admission, sex, age, origin of the patient, burn agent, ranking as the extent, severity of the case, body surface total area burned, occupancy rate, hospital stay, mean of surgery, self extermination, inhalation injury, mortality rate, hospital bed request and outpatient care. Results: Of the 101 patients admitted during this period, 69.3% were male, mean hospital stay of 8.3 days monthly. The median age was 33.7 years old (11 months to 90 years.) Flammable liquid (40.6%) was the most frequent, liquid alcohol (31.3%), followed by heated liquid (25.7%). Small burned in 61.4%, with an average of 11.3% TBSA (1 to 77.5%). The monthly mean of surgeries was 9.1 and they were made precociously, between 3 to 5 days post burn. 4.95% were caused by self extermination, 10.9% had inhalation injury and 5.94% mortality rate. Conclusion: There was male, of second degree burns mixed and less extensive predominance. The mortality was related to the presence of inhalation injury.


Subject(s)
Humans , Health Profile , Burn Units , Burns/prevention & control , Burns/epidemiology , Epidemiologic Studies
13.
Rev. bras. queimaduras ; 9(3): 95-99, 2010.
Article in Portuguese | LILACS | ID: biblio-1390633

ABSTRACT

Introdução: A Medicina Baseada em Evidências luta para que todos os médicos façam uso consciencioso, explícito e judicioso da melhor evidência atual, quando tomam decisões em seu trabalho de cuidado individual dos pacientes, no caso, pacientes vítimas de queimaduras. Objetivo: Realizar levantamento de artigos sobre revisão sistemática e meta-análise sobre o tema queimaduras, analisar, divulgar esse conhecimento científico na Sociedade Brasileira de Queimaduras, apresentando as conclusões desses estudos, as evidências presentes e sugerir inovações no atendimento desses pacientes. Método: O descritor utilizado foi burn/burns ou queimadura na Cochrane Library, usando o termo limitante reviews e classificando por record title. O mesmo descritor foi utilizado também para pesquisa nas bases de dados MEDLINE/PUBMED, LILACS e EMBASE. Resultados: Apenas 21 revisões sistemáticas com meta-análise foram encontradas, todas na língua inglesa. Os temas escolhidos são relevantes e vão desde prevenção até suporte nutricional e tratamento das cicatrizes, passando pelo tratamento cirúrgico e controle da dor. Vários assuntos importantes ainda não foram abordados. Existem cinco trabalhos protocolados, ou seja, não concluídos. Conclusão: É necessário maior número de publicações com qualidade científica, ou seja, estudos clínicos randomizados controlados, de preferência multicêntricos, com o objetivo de num futuro próximo sejam realizadas revisões sistemáticas com meta-análise para obtermos a melhor evidência atual, para o fortalecimento da política de atendimento do paciente com queimadura, além do avanço na qualidade das pesquisas desenvolvidas e na sua aplicabilidade.


Background: The Evidence-Based Medicine struggles to which all doctors, conscientiously, explicitly and judiciously applies for current best evidence when taking decisions in their work of caring for patients, in this case, burn patients. Purpose: Raise systematic review articles and meta-analysis articles about burn issue, analyze and spread this scientific knowledge in Brazilian Burn Society, presenting the conclusions of these studies, the current evidences and suggesting innovations in treatment of burn patient. Methods: The key word was burn/burns searched at Cochrane Library, using the limiting term reviews and sorted by record title. The same key word was applied in MEDLINE, LILACS and EMBASE. Results: Only 21 systematic reviews with meta-analysis were found, all in English language. The chosen issues are relevant and go from prevention to nutritional support, comprehending surgery treatment and pain control. Many important issues were not covered yet. There are 5 protocols, articles not concluded. Conclusion: Scientific quality studies - multicentre controlled randomized trials - are necessary to get the best current evidence in burn care and improve their applicability.


Subject(s)
Burns , Health Care Surveys/supply & distribution , Evidence-Based Medicine/methods
14.
Appl. cancer res ; 29(2): 58-64, Apr.-June 2009.
Article in English | LILACS, Inca | ID: lil-547666

ABSTRACT

There are cells that suffer uncontrolled growth with loss of contact inhibition and alterations in the nucleus, affecting the maintenance of telomeres in the chromosomes, forming a tumor. Telomeres have a tendency to merge, making repairs of DNA impracticable, taking the loss of genetic information and producing chromosomal aberrations. In relation to telomeres, there is a protein known as telomerase, hyperactive in several neoplasms, such as melanoma. The integrity and stability of chromosomes is one of the key factors that must be maintained for good functioning and propagation of an organism. In this revision, only aspects related to melanoma, telomeres and telomerase are addressed, pointing to the contribution of genetic and mutagenic environmental factors for carcinogenic development.


Subject(s)
Chromosomes , Genes , Melanoma , Telomerase
15.
Rev. Col. Bras. Cir ; 35(3): 159-161, maio-jun. 2008.
Article in Portuguese | LILACS | ID: lil-487534

ABSTRACT

OBJETIVO: Avaliar a casuística do Setor de Tumores Cutâneos da Disciplina de Cirurgia Plástica da Escola Paulista de Medicina/ Universidade Federal de São Paulo em relação à Perfusão Isolada de Membro (PIM) para o tratamento das metástases em trânsito do melanoma cutâneo, bem como os resultados conseqüentes, comparando-os com a literatura internacional. MÉTODO: De maio de 1993 a abril de 2007, 41 pacientes portadores de metástases em trânsito do melanoma cutâneo submeteram-se a 44 PIM. Por meio da observação de seus prontuários, foram avaliados quanto à toxicidade regional e sistêmica, e resposta tumoral após a PIM. Após a coleta dos resultados, procedeu-se a comparação com a literatura internacional e as posteriores conclusões. RESULTADOS: Houve 43,2 por cento de respostas completas, 36,4 por cento de respostas parciais e 20,4 por cento sem resposta ao tratamento proposto. A toxicidade regional aguda descrita foi, de modo geral, restrita a edema e eritema discretos, não havendo nenhum caso de complicação sistêmica grave. CONCLUSÃO: Os dados obtidos nessa casuística corroboram os descritos pela literatura internacional, demonstrando a importância e a possibilidade da PIM para o controle locoregional das metástases em trânsito do melanoma cutâneo também na realidade brasileira.


BACKGROUND: To evaluate our cases at the Skin Tumors Sector of Plastic Surgery Division at Federal University of São Paulo in relation to Isolated Limb Perfusion (ILP) for the treatment of in transit melanoma metastases, as well as the results, comparing them with international literature. METHODS: From May 1993 until April 2007, 41 patients with in transit metastases of skin melanoma were submitted to 44 ILP. Medical registry observations were evaluated in terms of regional and systemic toxicity and tumoral response after ILP. The obtained results were compared with international literature and posterior conclusions were done. RESULTS: We observed 43.2 percent of complete responses, 36.4 percent of partial responses and 20.4 percent of no responses after the procedures. Acute regional toxicity was in general restricted to slight erythema or edema, and there was no single case of serious systemic complication. CONCLUSION: The obtained data are in accordance with international literature demonstrating the importance and the possibility of ILP for locoregional control of in transit metastases of skin melanoma also in Brazilian reality.

16.
Acta cir. bras ; 22(5): 332-336, Sept.-Oct. 2007. graf, tab
Article in English | LILACS | ID: lil-463455

ABSTRACT

PURPOSE: To assess the importance of sentinel lymph node biopsy in patients with cutaneous melanoma. METHODS: Ninety consecutive non-randomized patients with stages I and II melanoma who underwent sentinel lymph node biopsy were followed up prospectively for six years. RESULTS: Patients were followed up for a mean period of 30 months. Their mean age was 53.3 years, ranging from 12 to 83 years. Thirty patients were male (37.5 percent) and 50, female (62.5 percent). Sentinel lymph node was positive in 32.5 percent and negative in 67.5 percent. It was found that the thicker the tumor, the greater the incidence of positive sentinel lymph nodes. In the group of patients with positive sentinel lymph nodes, recurrence occurred in 43.5 percent, but in those with negative sentinel lymph nodes, in only 7 percent, what points out to the association of tumor recurrence and positive sentinel lymph nodes. There were no major postoperative complications. CONCLUSION: Sentinel lymph node biopsy was demonstrated to be a safe method for selecting patients who need therapeutic lymphadenectomy.


OBJETIVO: Avaliar a importância da biópsia do linfonodo sentinela em pacientes com melanoma cutâneo MÉTODOS: Noventa pacientes com estadiamento I e II foram acompanhados prospectivamente no período de seis anos, de forma consecutiva e não randomizada e submetidos a biópsia do linfonodo sentinela. RESULTADOS: Os pacientes foram acompanhados durante tempo médio de 30 meses. A média de idade dos pacientes foi de 53,3 anos, variando de 12 a 83. Quanto ao sexo, foram avaliados 30 pacientes do sexo masculino (37,5 por cento) e 50 do sexo feminino (62,5 por cento).32,5 por cento dos pacientes apresentaram linfonodo sentinela positivo e 67,5 por cento linfonodo sentinela negativos. Comparando-se a espessura tumoral com a positividade do LS, verificou-se que quanto maior a espessura, maior a incidência de positividade do linfonodo sentinela. No grupo de pacientes com LS positivo a recorrência surgiu em 43,5 por cento dos casos, mostrando a relação entre a recorrência e a positividade do LS. Não houve complicações no pós-operatório. CONCLUSÃO: A biópsia do linfonodo sentinela mostrou-se um método seguro para selecionar os pacientes que necessitam de linfadenectomia terapêutica.


Subject(s)
Adolescent , Adult , Aged , Aged, 80 and over , Child , Female , Humans , Male , Middle Aged , Melanoma/pathology , Sentinel Lymph Node Biopsy , Skin Neoplasms/pathology , Skin/pathology , Follow-Up Studies , Lymph Node Excision , Melanoma/surgery , Neoplasm Recurrence, Local , Prospective Studies , Skin Neoplasms/surgery
17.
Acta cir. bras ; 20(5): 390-393, Sept.-Oct. 2005. ilus
Article in Portuguese | LILACS | ID: lil-414662

ABSTRACT

OBJETIVO: Estabelecer um modelo experimental de cultura primária de melanoma metastático por punção aspirativa por agulha fina (PAAF). MÉTODOS: Duas culturas primárias de células de melanoma metastático através de PAAF foram desenvolvidas a partir de pacientes submetidos à excisão de lesões metastáticas e identificadas por imunohistoquímica utilizando os marcadores S-100 e MB-45, específicos para melanoma. RESULTADOS: O diagnóstico da cultura foi confirmado através da imunohistoquímica. A técnica oferece vantagens como pequena morbidade e invasibilidade, além do mais, a mesma lesão pode ser puncionada seqüencialmente durante o tratamento do doente. CONCLUSÃO: O estabelecimento de cultura primária de melanoma metastático a partir de punção aspirativa por agulha fina mostrou-se uma técnica viável.


Subject(s)
Animals , Cattle , Humans , Cell Culture Techniques/methods , Lymph Nodes/pathology , Melanoma/pathology , Biopsy, Needle/methods , Immunohistochemistry , Lymph Node Excision , Lymphatic Metastasis , Melanoma/secondary , /analysis , Biomarkers, Tumor/analysis
18.
Rev. Col. Bras. Cir ; 27(2): 134-5, mar.-abr. 2000.
Article in Portuguese | LILACS | ID: lil-296545

ABSTRACT

Spontaneous perforation of the common bile duct is rare. It happens predominantly in children and it is related to obstructive disease of the biliary tract. We present a case of an 18 year-old male patient, with ulcerative rectocolitis associated with malignant tumor of the head of pancreas. The patient developed an acute abdomen syndrome and laparotomy, a spontaneous perforation of common bile duct was evidenced. The authors make a revision of the clinical aspects of that pathology


Subject(s)
Humans , Male , Adolescent , Colitis, Ulcerative/complications , Common Bile Duct/injuries , Pancreatic Neoplasms/complications
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