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Analysis of interobserver reproducibility in grading histological patterns of dysplastic nevi* / Avaliação da reprodutibilidade interobservador da graduação de padrões histológicos dos nevos displásicos
Anais Brasileiros de Dermatologia; Nobre, Aretha Brito; Piñeiro-Maceira, Juan; Raggio Luiz, Ronir.
Affiliation
  • Nobre, Aretha Brito; MD, MsC - Pathologist â€" Instituto Nacional de Câncer (National Cancer Institute -INCA) -. Rio de Janeiro. BR
  • Piñeiro-Maceira, Juan; MD, MsC - Pathologist â€" Instituto Nacional de Câncer (National Cancer Institute -INCA) -. Rio de Janeiro. BR
  • Raggio Luiz, Ronir; MD, MsC - Pathologist â€" Instituto Nacional de Câncer (National Cancer Institute -INCA) -. Rio de Janeiro. BR
An. bras. dermatol ; 88(1): 23-31, fev. 2013. tab, graf
Article in English | LILACS | ID: lil-667947
Responsible library: BR1.1
ABSTRACT
<h2>BACKGROUND:</h2> Dysplastic nevi are among the most important cutaneous melanoma simulators. They are important risk markers for this neoplasia and can be its potential precursors. Some authors found a statistically significant relationship between the degree of dysplasia and the risk for developing melanoma. However, reproducibility of grading criteria ranged from poor to fair in the researched articles. <h2>OBJECTIVE:</h2> To test the reproducibility of the grading criteria proposed by Sagebiel et al. regarding dysplastic nevi. <h2>METHODS:</h2> Histological specimens of 75 dysplastic nevi were graded, independently and in a blinded fashion, according to preestablished criteria, by a panel of 10 pathologists with different levels of experience. Diagnostic agreement was calculated using weighted kappa and intraclass correlation coefficients. <h2>RESULTS:</h2> The average of weighted kappa values was 0.13 for all observers, 0.12 for dermatopathologists, 0.18 for general pathologists and 0.05 for residents. Intraclass correlation coefficient values were 0.2 for all observers, 0.18 for dermatopathologists, 0.33 for general pathologists and 0.15 for residents. <h2>CONCLUSIONS:</h2> Histopathological grading for dysplastic nevi was not reproducible in this Brazilian series, so the criteria used are not a helpful histopathological parameter for clinicopathological correlation. .
RESUMO
FUNDAMENTOS Nevos displásicos estão entre os mais importantes simuladores de melanoma. São marcadores de risco para o desenvolvimento dessa neoplasia e podem ser seus precursores. Alguns autores observaram uma relação estatisticamente significativa entre o grau de displasia e o risco de desenvolvimento de melanoma. No entanto, a reprodutibilidade dos critérios para graduação variou de ruim a razoável nos artigos consultados. <h2>OBJETIVO:</h2> Testar a reprodutibilidade da graduação proposta por Sagebiel et al. para os nevos displásicos. <h2>MÉTODOS:</h2> Seções histológicas de setenta e cinco nevos displásicos foram graduadas, de forma independente e anônima, segundo critérios pré-estabelecidos, por um painel de 10 patologistas com diferentes níveis de experiência. A concordância diagnóstica foi calculada usando os coeficientes de kappa ponderado e de correlação intraclasse. <h2>RESULTADOS:</h2> A média dos valores de kappa ponderado foi de 0,13 para todos os observadores, de 0,12 para os dermatopatologistas, de 0,18 para os patologistas gerais e de 0,05 para os residentes. Os valores dos coeficientes de correlação intraclasse foram 0,2 para todos os observadores, 0,18 para os dermatopatologistas, 0,33 para os patologistas gerais e 0,15 para os residentes. <h2>CONCLUSÕES:</h2> A graduação histopatológica dos nevos displásicos não foi reprodutível nesta ...
Subject(s)


Full text: Available Collection: International databases Database: LILACS Main subject: Skin Neoplasms / Dysplastic Nevus Syndrome / Nevus, Pigmented Type of study: Observational study / Risk factors Limits: Adolescent / Adult / Aged / Aged, 80 and over / Child / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: An. bras. dermatol Journal subject: Dermatology Year: 2013 Document type: Article Affiliation country: Brazil Institution/Affiliation country: MD, MsC - Pathologist â€" Instituto Nacional de Câncer (National Cancer Institute -INCA) -/BR

Full text: Available Collection: International databases Database: LILACS Main subject: Skin Neoplasms / Dysplastic Nevus Syndrome / Nevus, Pigmented Type of study: Observational study / Risk factors Limits: Adolescent / Adult / Aged / Aged, 80 and over / Child / Female / Humans / Male Country/Region as subject: South America / Brazil Language: English Journal: An. bras. dermatol Journal subject: Dermatology Year: 2013 Document type: Article Affiliation country: Brazil Institution/Affiliation country: MD, MsC - Pathologist â€" Instituto Nacional de Câncer (National Cancer Institute -INCA) -/BR
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