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BREAST CYTOPATHOLOGY

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Phyllodes Tumor 65

Figure 3.11. Benign phyllodes tumor. High magnification shows the

classic biphasic morphology. The ductal epithelial fragment shows

enlarged, somewhat crowded nuclei, whereas the stromal component

shows round to oval and fusiform nuclei embedded in a loose

myxoid tissue. (Smear, Papanicolaou.)

Figure 3.12. Benign phyllodes tumor. Hypercellular smear shows

crowded fragments of ductal epithelium, stromal matrix, myoepithelial

cells, multinucleated giant cells, and numerous individually dispersed

mesenchymal cell nuclei. (Smear, Diff-Quik.)

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