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  • Title: Fine needle aspiration cytology of invasive cribriform carcinoma of the breast with osteoclastlike giant cells: a case report.
    Author: Ng WK.
    Journal: Acta Cytol; 2001; 45(4):593-8. PubMed ID: 11480724.
    Abstract:
    BACKGROUND: Nonneoplastic osteoclastlike giant cells are occasionally associated with carcinoma of the breast, pancreatobiliary and gastrointestinal systems. In the breast, this uncommon stromal response is seen mainly in invasive carcinoma with low grade cytology, among which invasive cribriform carcinoma is the classic example. Details of the fine needle aspiration cytology of this phenomenon, especially in thin-layer preparations, have been described rarely. CASE: The fine needle aspiration cytology of an invasive cribriform carcinoma of the breast occurred in a 66-year-old woman. Cytology showed cohesive sheets and three-dimensional cribriform clusters of bland-looking and mitotically inactive ductal cells in a blood-stained background. Scattered multinucleated, osteoclastlike giant cells, some containing hemosiderin granules, were also seen. Myoepithelial cells and naked nuclei were not obvious. The cellular composition was more discernible in liquid-based cytologic preparations. Histologic examination of the excisional biopsy showed an invasive cribriform carcinoma associated with many osteoclastlike giant cells in a hypervascular stroma. CONCLUSION: In view of the extremely low grade cytology of the malignant ductal cells, invasive cribriform carcinoma may closely mimic benign proliferative breast diseases on fine needle aspiration biopsy. Recognition of this special relationship with osteoclastlike giant cells, which are rarely present in certain subtypes of breast cancer but not benign lesions, can help to arrive at a correct cytologic diagnosis.
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