Figure 3b. (a) Mediolateral oblique mammogram obtained before VAB in a 43-year-old woman with a palpable left breast mass (arrow) of 1.2 cm in mean diameter. (b) US image obtained during VAB demonstrates the remaining visible portion of the mass (arrows); this portion was subsequently removed with the biopsy probe (arrowheads). (c) Mediolateral oblique mammogram obtained after the procedure shows a biopsy cavity (arrows) with no residual mass. A metallic clip has been placed at the biopsy site. The histologic diagnosis was fibroadenoma. At 6-month follow-up (results not shown) there was no residual palpable mass; however, a small residual mass of 0.5 cm in mean diameter was visible at US.