Giant juvenile fibroadenoma in a 14-year old Chinese female: A case report

Figure 2 Pathological examination. A: Low magnification (10 × 10 times) shows a massive ductal epithelial hyperplasia (black arrow) surrounded by a comparatively homogeneous stromal component (green arrow). The interstitial cells in the local lesions are dense, and there is no mitotic phase or cell abnormality; B: Low magnification (10 × 20 times) shows the columnar cells with punctate protrusion in the mammary ducts (black arrow). The density of stromal cells increased without obvious heteromorphism, which was mainly manifested by the interlaced cluster arrangement of fibroblasts and myofibroblasts (green arrow), showing the peritubular type.