Benign well encapsulated tumors formed of proliferating breast ducts and stromal fibrocytes. In areas both component are represented equally (pericanalicular pattern) however, in other areas fibroblastic proliferation dominates thus compressing ducts into slit-like structures (intracanalicular pattern). No evidence of malignancy.
Rt breast masses
Two soft tissue masses measuring 3x2.8x2.3 cm, and 2.3x2.3x2 cm.
Right breast masses, excision biopsies: