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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Correlação clínica, dermatoscópica e histopatológica das lesões pigmentadas planas da face

Mendes, Marcela Sena Teixeira 21 July 2016 (has links)
Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, Programa de Pós-Graduação em Ciências da Saúde, 2016. / Submitted by Albânia Cézar de Melo (albania@bce.unb.br) on 2016-09-05T15:13:25Z No. of bitstreams: 1 2016_MarcelaSenaTeixeiraMendes.pdf: 5131823 bytes, checksum: 61a1625ac017719b387387e42c4d96a9 (MD5) / Approved for entry into archive by Raquel Viana(raquelviana@bce.unb.br) on 2016-10-24T14:54:53Z (GMT) No. of bitstreams: 1 2016_MarcelaSenaTeixeiraMendes.pdf: 5131823 bytes, checksum: 61a1625ac017719b387387e42c4d96a9 (MD5) / Made available in DSpace on 2016-10-24T14:54:53Z (GMT). No. of bitstreams: 1 2016_MarcelaSenaTeixeiraMendes.pdf: 5131823 bytes, checksum: 61a1625ac017719b387387e42c4d96a9 (MD5) / Introdução. O diagnóstico diferencial das lesões pigmentadas planas da face pode ser desafiador. Clinicamente, elas sem apresentam como máculas pigmentadas planas e podem corresponder a vários diagnósticos como lentigo maligno (LM), lentigo maligno melanoma (LMM), queratose seborreica (QS), lentigo solar (LS), queratose actínica pigmentada (QAP) e queratose liquenóide (QL). Objetivo. Comparar os achados clínicos, dermatoscópicos e histopatológicos das lesões pigmentadas planas da face. Métodos. Pacientes com lesões pigmentadas planas da face foram avaliados clinica e dermatoscopicamente e tiveram suas fotos tiradas. Usando os resultados das biópsias como padrão-ouro, os achados clínicos e dermatoscópicos foram comparados. Resultados. A presença de círculos concêntricos, padrão anular-granular, borrões e a ausência de bordas bem definidas foram significativamente mais associados ao lentigo maligno em relação ao CBC, QAP e lesões benignas (p=0,0291, p=0,0001, p=0,0021, p=0,0003, p=0,0150 e p=0,0043, respectivamente. A presença de escamas, telangiectasias, e padrão morango-like foram mais associadas às QAP do que ao CBC, LM e lesões benignas (p < 0,0001, p=0,0023 e p< 0,0001 respectivamente). Sensibilidade, especificidade e valores preditivos para o exame dermatoscópico superaram a avaliação clínica isolada para LM e QAP. Os valores encontrados para LM representaram aumentos de 10 a 27% na sensibilidade. Conclusão. A dermatoscopia apresenta boa sensibilidade e especificidade na avaliação das LPPF. No entanto, a identificação de padrões dermatoscópicos mais específicos ainda se faz necessária. Desta forma, o exame histopatológico permanece como padrão ouro para o diagnóstico, devendo ser realizado na forma de biópsia excisional sempre que possível, dada a possibilidade de tumores de colisão nesta topografia. ________________________________________________________________________________________________ ABSTRACT / Background. The differential diagnosis of flat pigmented facial lesions (FPFL) can be challenging. Clinically, they present as flat pigmented macules, and may correspond to several diagnoses such as lentigo maligna (LM), lentigo maligna melanoma (LMM), seborrheic keratosis (SK), solar lentigo (SL), pigmented actinic keratosis (PAK) and lichenoid keratosis (LK). Objective. The aim of this paper is to compare the clinical and dermatoscopic findings in FPFL with the respective histopathological diagnosis. Methods. Patients with FPFL were evaluated clinically and dermatoscopicaly, and had their pictures taken. Using the biopsies results as gold standard, the clinical and dermatoscopic findings were compared. Results. The presence of circle within a circle, rhomboidal structures, annular-granular pattern, blotches and the absence of sharp demarcation were significantly associated to LM as opposed to BCC, QAP and benign lesions. (p=0,0291, p=0,0001, p=0,0021, p=0,0003, p=0,0150 e p=0,0043, respectively). The presence of scales, telangiectasia and strawberry-like pattern were more associated to PAK than to BCC, LM and benign lesions (p < 0,0001, p=0,0023 e p< 0,0001 respectively). Sensitivity, specificity and predictive values for dermatoscopic exam overrated clinical evaluation alone for LM and PAK lesions. The values found for LM presented increases of 10 to 27% in sensitivity. Conclusion. Dermoscopy has a good sensitivity and specificity profile in the evaluation of FPFL. However, more specific dermatoscopic patterns are still needed in the differentiation between these lesions. Accordingly, biopsy remains the gold standard, and should be performed in an excisional manner whenever possible due to the possibility of collision tumors.
2

Teledermatoscopia das lesões cutâneas pigmentadas / Teledermoscopy of pigmented skin lesions

Ishioka, Priscila [UNIFESP] 29 July 2009 (has links) (PDF)
Made available in DSpace on 2015-07-22T20:50:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-07-29 / Objetivos: Avaliar a concordância no diagnóstico das lesões cutâneas pigmentadas por meio do exame dermatoscópico presencial e a distância. Analisar a concordância diagnóstica da teledermatoscopia e do exame dermatoscópico presencial em relação ao resultado anatomopatológico. Verificar a acurácia, a sensibilidade e a especificidade da teledermatoscopia na detecção das lesões pigmentadas malignas. Métodos: Sessenta e quatro lesões cutâneas pigmentadas foram submetidas a exame clínico e dermatoscópico realizado presencialmente por dois examinadores com experiência em dermatoscopia, durante o ano de 2005, no ambulatório de dermatoscopia do Departamento de Dermatologia da Universidade Federal de São Paulo (UNIFESP). Após dois anos, imagens digitais clínicas e dermatoscópicas destes casos foram reexaminadas pelos mesmos especialistas por meio da transmissão de imagens e de dados clínicos via web. Resultados: Observou-se boa concordância diagnóstica entre o exame presencial e a teledermatoscopia com valor de Kappa de 0,698 (IC a 95% - [0,575; 0,821]). Verificou-se também boa concordância entre o exame presencial e a teledermatoscopia com o resultado anatomopatológico (padrão ouro) com valores de Kappa de 0,728 (IC a 95% - [0,608; 0,848]) e 0,656 (IC a 95% - [0,526; 0,785]), respectivamente. Constatou-se 84% de acurácia, 93% de sensibilidade e 78% de especificidade na detecção das lesões pigmentadas malignas no exame dermatoscópico a distância. Dois casos falsos negativos foram observados pela teledermatoscopia. Não houve diferença estatisticamente significante entre a sensibilidade, a especificidade e a acurácia das duas modalidades diagnósticas. Conclusões: O exame dermatoscópico a distância pela transmissão de imagens digitais e de dados clínicos proporcionou acurácia diagnóstica, sensibilidade e especificidade comparáveis ao exame convencional. A teledermatoscopia mostrou ser método eficaz e confiável na detecção das lesões malignas constituindo ferramenta importante na triagem das lesões pigmentadas. A boa concordância diagnóstica entre a avaliação via web e o exame presencial destaca a aplicabilidade da teledermatoscopia como instrumento de assistência especializada em regiões de difícil acesso ou carentes no setor de saúde. / Objectives: To evaluate agreement in diagnosis of pigmented skin lesions through presential or remote dermoscopic examination. To analyze diagnosis agreement of teledermoscopy and presential dermoscopic examination regarding pathological findings. To verify accuracy, sensibility and specificity of teledermoscopy in detection of malignant pigmented lesions. Methods: A total of 64 pigmented skin lesions were submitted to clinical and dermoscopic examinations performed presentially by two examiners experienced in dermoscopy, at the Dermoscopy Outpatient’s Clinic, Department of Dermatology, Universidade Federal de São Paulo (UNIFESP), in 2005. Two years later, the digital clinical and dermoscopic images of these cases were re-examined by the same specialists through transmission of images and clinical data via web. Agreement between presential diagnosis and telediagnosis was assessed by the Kappa (κ) statistic calculation and its respective 95% confidence interval (95% CI). Through this calculation, the agreement between presential presumptive diagnoses and telediagnoses with pathological findings was analyzed. Sensitivity, specificity and accuracy of two diagnostic modalities were obtained using the pathological examination as the gold standard. The respective 95% confidence interval (95% CI) was calculated for each diagnostic measurement. Results: Good diagnostic agreement was observed between presential examination and teledermoscopy, with a Kappa value of 0.698 (95% CI - [0.575; 0.821]). Good agreement was also found between conventional examination and teledermoscopy, and the pathological findings (gold standard) had Kappa values of 0.728 (95% CI - [0.608; 0.848]) and 0.656 (95% CI - [0.526; 0.785]), respectively. Accuracy of 84%, sensitivity of 93% and specificity of 78% were observed in detecting malignant pigmented lesions by remote dermoscopic examination. Two false negative cases were observed through teledermoscopy. There was no statistically significant difference in sensitivity, specificity and accuracy of both diagnostic methods. Conclusions: Remote dermoscopic examination by means of digital image transmission and of clinical data provided diagnostic accuracy, sensitivity and specificity comparable to conventional examination. Teledermoscopy proved to be an efficient and reliable method to detect malignant lesions, representing an important tool to screen pigmented lesions. The good diagnostic agreement between assessment via web and conventional examination highlights the applicability of teledermoscopy as a specialized assistance tool in regions that are difficult to reach or lack health resources. / TEDE / BV UNIFESP: Teses e dissertações

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