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BREAST CYTOPATHOLOGY

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94 4. Primary Malignant Tumors

Figure 4.13. Ductal carcinoma. Higher magnification of malignant

cells with pleomorphic, enlarged nuclei in a syncytial aggregate.

Nuclei have macronucleoli, a feature uncommonly seen in classic

ductal carcinoma. A follow-up biopsy revealed an infiltrating ductal

carcinoma. (Smear, Papanicolaou.)

Figure 4.14. Ductal carcinoma. Higher magnification of the highgrade

tumor with markedly pleomorphic cells. The cells are scattered,

often displaying naked nuclei in a necrotic background. A

follow-up biopsy revealed an infiltrating ductal carcinoma. (Smear,

Papanicolaou.)

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