Fine needle aspiration cytology and core biopsy histology in infiltrating syringomatous adenoma of the breast - A case report

BACKGROUND: Infiltrating syringomatous adenoma is a rare tumor of the breas t that can radiologically mimic invasive duct carcinoma. Detailed fine need le aspiration cytology and needle cove biopsy findings on this lesion have not been previously described. CASE: The clinical, radiologic non pathologic findings of an infiltrating s yringomatous adenoma of the breast in a 71-year-old female who presented wi th a subareolar lump are described. The cytology of the tumor tons characte rized by a combination of a background of plump,fibroblastoid cells and coh esive sheets of bland epithelial cells. Histologically the tumor showed inf iltrating, duct-like structures with squamous metaplasia and a desmoplastic stroma. CONCLUSION: Fine needle aspiration cytology and needle core biopsy can dist inguish infiltrating syringomatous adenoma from malignant disease of the br east.