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  • Title: 11-gauge vacuum assisted directional biopsy of breast calcifications, using upright stereotactic guidance.
    Author: Nisbet AP, Borthwick-Clarke A, Scott N.
    Journal: Eur J Radiol; 2000 Dec; 36(3):144-6. PubMed ID: 11091014.
    Abstract:
    To assess the use of a prototype vacuum assisted biopsy device on a standard upright mammography unit, using a slightly modified digital stereotactic add-on component. A group comprised of 42 sequential patients, who had been recalled from an asymptomatic mammographic screening programme, were studied. All 42 were recalled for assessment of small clusters of microcalcification, graded as indeterminate. Group 1 (21 patients) were biopsied using 14-gauge automated large core needle biopsy. Group 2 (21 patients) were biopsied using 11-gauge vacuum assisted biopsy. Both groups had mammographic guidance on the same upright mammographic unit (Siemens 3000), with Opdima Digital Stereotactic add-on. A total of 86% of specimen radiographs in Group 2 patients (vacuum assisted biopsy) showed successful sampling of the calcifications, compared to 62% of Group 1 patients (14-gauge automated large core biopsies). This study shows that vacuum assisted biopsy is possible using upright stereotactic mammography units. The technique shows promise as a biopsy tool, offering larger cores compared to 14-gauge automated large core biopsy, while requiring less space and lower purchase price compared to dedicated prone biopsy tables. The technique also offers access to biopsy in patients with posterior lesions and for patients who cannot tolerate prone positioning.
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