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  • Title: Abnormal mammography and sonography associated with foreign-body giant-cell reaction after stereotactic vacuum-assisted breast biopsy with carbon marking.
    Author: Ruiz-Delgado ML, López-Ruiz JA, Sáiz-López A.
    Journal: Acta Radiol; 2008 Dec; 49(10):1112-8. PubMed ID: 18932053.
    Abstract:
    BACKGROUND: Carbon marking of the biopsy site and needle track following stereotactic breast biopsy in nonpalpable mammography-detected lesions provides for safe and accurate localization for subsequent surgical excision. No significant complications of carbon marking have been reported to date. PURPOSE: To report follow-up imaging findings and histological changes (foreign-body giant-cell reaction) attributable to the use of carbon marking after vacuum breast biopsies. MATERIAL AND METHODS: This was a retrospective study of 130 patients in a mammographic screening program with nonpalpable suspicious breast lesions that were referred for stereotactic directional vacuum-assisted breast biopsy with carbon marking. Histological diagnosis was benign in all cases, but 1-year follow-up mammograms demonstrated suspect findings in four of them. RESULTS: For all four patients, the results of the initial stereotactic vacuum-assisted biopsy were benign, but mammographic follow-up and ultrasound findings revealed suspicious changes that, in all cases, were histologically shown to be foreign-body giant-cell reactions attributable to the use of carbon. CONCLUSION: In four of 130 lesions (3%) that were carbon marked following stereotactic vacuum-assisted breast biopsy, and in which surgical excision was not required, the mammographic and ultrasound follow-up appearance of the breast simulated malignancy. The abnormality was attributable to the use of carbon, which represents a potential source of misdiagnosis.
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