Colonoscopia com Magnificação de Imagem: Análise da Variação Interobservadores para os Padrões de Criptas e Comparação das Imagens Endoscópicas com os Achados Histopatológicos Magnification Colonoscopy Images: Analysis of Variation Interobservers for Pit Patern and Comparison of Endoscopy And Histopatologic Findings

ABSTRACT: Colonoscopy with magnified view is the most reliable nonbiopsy method for distinguishing non-neoplastic fromneoplastic colorectal lesions. This study analysed lhe interobserver concordance in diagnosis of pit patem, with 3 experientsendoscopists using Kudo Classification and correlating the this aspects with histological ones. A total of 213 magnificated imagesinjuries (polipoides and plain) had been collected of 161 independent observing patients consecutive and presented tres that hadexpressed opinion on the predominant standard of criptas. All the injuries had been completely ressected and send for histopato logicostudy. The analysis esteem statistics of Kappa showed that the indice of general agreement for standards of criptas between the3 observers was 84%; sensitivity 91.4%; specificity 67.2% positive preditivo value 86.6%; negative preditivo value 79.3%; e ind exof Kappa of 0,61%. Although the interobserver reproduction of pit patern are good, the image for colonoscopia with magnificacao ,does not have to substitute the histopatologic study, therefore it does not differentiate with the necessary security neoplasticinjuries of non neoplastic.Key words: Magnification colonoscopy; neoplastic colorectal lesions; pit patem; Kudo classification.