Stereotaktische perkutane Vakuumbiopsie mit dem Mammotome®-System

Objective: To evaluate stereotactic, percutaneous, directional vacuum-assisted breast biopsy of ACR 2, 3 and 4 lesions. Methods: 92 mammographic or clinical breast lesions (ACR 2, 3 and 4) in 69 patients were evaluated with the Mammotest (r) Plus stereotactic system and the Mammotome (r) vacuum-assisted biopsy device with an 11-gauge needle. Biopsies were performed with local anesthesia on an outpatient basis. Results: The mammographic lesions were completely removed in 28 of the 69 patients (40%). 65 % of microcalcifications and all lesions < 10 mm were completely removed. Rebiopsy was recommended for 12 patients (17%) with incompletely removed lesions. 12 patients (17 %) subsequently underwent open excisional biopsy. Six invasive carcinomas and 6 in situ lesions were detected. Only 4 of the 12 premalignant or malignant lesions were completely removed with the Mammotome (r) . The benign-to-malignant ratio was 82% to 18%. Open biopsy was avoided in 43 patients (62%). The rate of complications (bleeding, pain) was less than 5%. Conclusions: Percutaneous stereotactic vacuum-assisted biopsy is an accurate diagnostic tool with low morbidity for the evaluation of microcalcifications and breast lesions <2 cm in diameter.