Évaluation des macrobiopsies mammaires stéréotaxiques par système Vacora ® 10-gauge (541 procédures)

Abstract

Purpose To evaluate stereotactic core biopsies of the breast with the 10-gauge Vacora ® biopsy device. Patients and methods Retrospective study of 541 procedures in 502 patients performed between 2007 and 2009. Results The procedure failed in 2 % of cases, non-complicated hematomas occurred in 5 % of cases and unsightly scars in two cases. A clip was deployed in 70 % of cases, successfully in 99 % of cases. The procedure was well tolerated in 88 % of cases. Core biopsies confirmed a benign lesion in 55 % of cases, borderline lesions in 19 % of cases and malignant lesions in 26 % of cases with complementary surgery performed in 40 % of cases. For surgical lesions, sensitivity, specificity, PPV and NPV were 89 %, 100 %, 100 % and 84 % respectively. Atypical ductal dysplasia was under-estimated in 8 % of cases while DCIS was under-estimated in 14 % of cases. After review of the mammograms, 3 % of Bi-Rads 4 lesions were reclassified as Bi-Rads 3 lesions, all benign at core biopsy. Half of these results were from screening mammography programs. Conclusion Results with the 10-gauge Vacora ® biopsy device are similar to reports from the literature, mainly using the Mammotome system, with regards to tolerability and reliability for a lesser cost.