Sections from the first mass revealed benign well encapsulated tumor formed of proliferating breast ducts and stromal fibrocytes. The latter predominate in the lesion thus compressing ducts into slit-like structures. However, in the second mass, there are areas showing that fibroblastic proliferation dominates thus compressing ducts into slit-like structures (intracanalicular pattern). No evidence of malignancy.
Lt. breast 2 masses.
Two well circumscribed rubbery whitish masses measured 4.5x3x1.8 cm, and 2.5x2x2 cm.
Right breast masses, excision: