Fatores preditivos de margens cirúrgicas comprometidas no tratamento do carcinoma ductal in situ da mama / Predictive factors of positive margins in the treatment of ductal carcinoma in situ

RESUMO

O objetivo deste estudo foi determinar, através de revisão da literatura, possíveis fatores que possam estar associados com margens cirúrgicas comprometidas em portadoras de carcinoma ductal in situ (CDIS). Foi empregado o banco de dados do Medical Literature Analysis and Retrieval System Online (MEDLINE®), utilizando as expressões "Ductal carcinoma in situ", "in situ breast cancer" e "DCIS". Os termos adicionais incluídos foram "surgery" e "margin". O período de referência desses estudos foi de fevereiro de 2000 a fevereiro de 2015. Dos 438 artigos encontrados, 6 foram incluí- dos nessa revisão, com um total de 1.222 pacientes. A taxa de margens comprometidas nos estudos variou de 29 a 72%. As principais variáveis relacionadas com margem comprometida foram o grau histológico e o tamanho nal da lesão na para na (três estudos), multifocalidade (um estudo) e volume da peça cirúrgica ressecada (um estudo). Margens cirúrgicas representam, indubitavelmen- te, um dos mais importantes fatores de recorrência local no tratamento do CDIS. São necessários estudos mais amplos e com metodologias adequadas para se estrati car, com segurança, os fatores de risco associados ao comprometimento das margens cirúrgicas.

ABSTRACT

e purpose of this study was to determinate, through a literature review, possible factors related to positive margins in patients treated with surgery for ductal carcinoma in situ (DCIS). e Medical Literature Analysis and Retrieval System Online (MEDLINE®) database were used to search the articles, with the expressions "Ductal carcinoma in situ" "in situ breast cancer" and "DCIS". Ad- ditional terms included were "surgery" and "margin". e reference period of these studies was from February 2000 to February 2015. A total of 438 articles were found, and six of them were included in this review, with a total of 1,222 patients. e rate of positive margins studies varied from 29 to 72%. e main variables related to positive margins were the histological grade and the nal size of the lesion in para n (three studies), multifocality (one study) and volume of the resected specimen (one study). Surgical margins represent, undoubtedly, one of the most important factors of local recurrence in the treatment of DCIS. Larger studies are needed, with adequate methodology, to safely stratify the risk factors associated with surgical margins involvement.