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We report a 77 year old woman with a 14 year history of lymphoplasmacytic lymphoma initially involving the parotid gland, cervical lymph node, and hilar lymph node. She was treated with chlorambucil but the disease ran a protracted course with eventual multiorgan dissemination and required repeated chemotherapy. This time, she presented with bilateral hard, non-tender breast lumps for three months. The clinical diagnosis was lymphoma infiltration versus breast carcinoma. Mammographic examination showed a 2 cm, medium density, well circumscribed mass in the left breast and a 0.5 cm nodule of similar characteristics with macrocalcifications in the right breast.
Biopsy from the right breast mass showed amyloid deposits with foreign body giant …