Breast cancer is the most commonly diagnosed cancer in women in the United States and accounts for 26% of all female cancers. In 2015 , approximately 40.290 US women died from breast cancer.
EVALUATION OF THE FALSE NEGATIVE RATE IN THE EXAMINATION OF FREEZING OF THE SENTINEL LYMPH NODE IN HBL –Recife Pe
Authrs :Ana Flavia Morais Leda , Darley de Lima Ferreira Filho , Nancy Cristina Ferraz de Lucena Ferreira
Introduction:
Breast cancer is the most commonly diagnosed cancer in women in the United States and accounts for 26% of all female cancers. In 2015 , approximately 40.290 US women died from breast cancer. In our country, an estimated 59.700 new cases of invasive breast cancer. Then , is very important the early diagnosed of breast cancer and the use of sentinel lymph node probably chance this prognosis of this disease.
Objective :
To evaluate the false-negative rate of freezing of sentinel lymph node In breast cancer and the factors associated with it
Methods :
Twenty-five breast cancer patients who underwent patent blue injection and sentinel lymph node (LS) biopsy between March 2016 and March 2017 in 570 surgery were evaluated for the following variables :age), tumor size , histological characteristics of the tumor (type- and degree of differentiation) and diagnosis of the definitive freezing and histopathological examination of LS
Results :
The average age was 56,2 , the tumor size was 2,3 cm and the histhological type was carcinoma ductal invasive in 80 %.In a relation the degree of diferenciation , the G2 appear in 19 patients , G1 in 2 cases and G3 in 3 cases. The false-negative rate in the LS freezing test was 8%(2 cases).The specificity was 100%, and sensitivy was 50 %.None of the variables evaluated was associated with increase in the incidence of false-negative.In our research , there was no association between tumor size and incidence of axillary metastasis.
Conclusion:
The false-negative rate of the LS freezing test was 8 % and none of the variables evaluated correlated with this event.No anatamopathological variable studied was associated with the occurrence of false negative
Key-word :breast cancer , lymph node, sentinel , false negative