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Abstract #4120

Focal areas of NME undergoing MRI-guided VABB: outcomes and frequency of malignancy

Satoko Okamoto1,2, James Covelli1, Shutian Chen1, Bruce Daniel1, and Debra Ikeda1

1Radiology, Stanford University, Stanford, CA, United States, 2Radiology, St Marianna university school of medicine, Kawasaki, Japan

We evaluated the positive predictive values (PPVs) of internal enhancement and kinetic data in focal areas of non-mass enhancement (NME) in patients undergoing MRI-guided vacuum-assisted breast biopsy (MRI-VABB). Our results show the PPVs of clumped and heterogeneous internal enhancement were similar (PPV=25% vs 21%) suggesting that heterogeneous internal is similar to clumped enhancement. The most predictive kinetic pattern of malignancy was fast initial phase without any tendency for cancer using the delayed phase.

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