Fig. 3.
Invasive ductal carcinoma. A) Breast nodule with inhomogeneous US features and lobulated margins. Ultrasound class 4 resulted to be class B2 at the CNB using 14 G needle. B) The definitive histopathological specimen confirmed the diagnosis of a malignant breast lesion (hematoxylin eosin stain, ×100 magnification).