Figure 1: Cribriform carcinoma (asterisk, demarcated by dashed line) arising within a benign phyllodes tumor (a: H and E, ×12.5). Benign ductal epithelium with fibromyxoid stroma forms clefts (b: H and E, ×40). The stroma showed proliferation of spindle cells with increased cellularity and mitosis of 3–4 per 10 high-power field (c: H and E, ×100). There was no stromal overgrowth present