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Abstract

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Secretory carcinoma is a very rare tumor of the breast and demonstrates distinctive
pathologic features such as large amounts of intracellular and extracellular secretion and
vacuolated or granular eosinophilic cytoplasm. We experienced a case of secretory
carcinoma of the breast in a 57-year-old woman diagnosed with the fine needle
aspiration and confirmed by breast conserving surgery. The cytologic smears were
composed of numerous cohesive sheets or isolated tumor cells with intracytoplasmic
vacuolization and extracellular lumens. The carcinoma cells were generally
medium-sized, but showed mild size variation. Cytoplasm was moderate to abundant in
amount and appeared vacuolated with occasional eosinophillic, granular and lacy pattern,
and was positive to PAS and D-PAS stain. Many signet ring-like cells with a single
intracytoplasmic vacuole displacing the nucleus were scattered. Most of the nuclei
appeared round with slight hyperchromasia, and had finely granular or opaque chromatic
and small prominent nucleoli. The histologic findings showed solid or microcystic pattern
of tumor cells separated by dense, hyalinized fibrous septa.

Å°¿öµå

Breast neoplasms; Needle Biopsy;

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