Pre-biopsy ultrasound image of fibroadenoma demonstrates its homogenous hypoechoic interior, smooth margins, posterior enhancement, and bilateral shadowing. Figure 10B. During core biopsy of ...

Most often it is the small fibroadenoma (<1cm ... and lateral over anterior/posterior ratio of less than 1. On core biopsy, this indeterminate lesion was found to be infiltrating carcinoma.