Retrospective analysis of the stereotactic Mammotome biopsy

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  • 当院におけるステレオガイド下マンモトームの現況

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The stereotactic MammotomeR biopsy was introduced to our institution in 2006, and more than 300 patients have been biopsied up to the present date. Two hundred eighty-eight patients, who were biopsied by the stereotactic Mammotome from January 2007 to June 2012, were retrospectively analyzed for the following issues: referral rate to our institution; mammography findings; histopathological results in each mammography finding; and outcomes of our surgeries. All mammograms had findings of micro-calcification, and among them，the category 3 finding was the most common. In cases of categories 3 and 4, the detection rates of malignancy were approximately 20% and 50%, respectively. Moreover, a new technique, the rubber band method, which is a modification of the method reported by Onoda, was devised for demarcating a suitable excision site in the operation. After introducing this method, there have been no cases with a positive margin. Although the rubber band method appears to be useful, further evaluations and assessment are required.

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