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Stereotactic, breast biopsy, mammography
Background: The purpose of this study was to evaluate the results of stereotactic breast core needle biopsy in a tertiary breast center of Tehran University of Medical Sciences.
Methods: Patients who were candidates for mammography-guided stereotactic breast core biopsy from March 2011 to December 2013 were included in this study. Stereotactic biopsy was performed by a dedicated prone Hologic mammography unit employing an automatic biopsy device with a 14-gauge needle. Patients with malignant or premalignant biopsy results were followed up with surgical pathology reports and patients with benign core biopsy findings were followed up with mammograms.
Results: Among the 150 patients who were included in the final analyses, 30 had malignant findings on stereotactic biopsy and 10 patients had a premalignant pathology result on stereotactic biopsy. The remaining 110 patients had benign results on histopathology; however, in 30 patients, wire localization and surgery of the same area were performed due to either discordant mammography-pathology findings or clinical suspicion of malignancy and in two of them, advancing pathologic grade was witnessed. A total of 80 patients with benign histopathologic results had follow-up mammograms and the follow-up period was between 12 months to 3 years. The sensitivity and specificity of stereotactic breast core biopsy in this study were 94% and 96%, respectively.
Conclusions: Stereotactic breast core needle biopsy is an effective and safe method in evaluation of suspicious mammography-detected lesions but caution should be warranted when taking results into account, especially in mammography-pathology discordance and in patients with premalignant pathology reports.
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