title: A case of plasmacytoma of the breast mimicking an inflammatory carcinoma.
abstract: A 42-year-old woman presented to our institution with asymptomatic swelling of the left breast for the previous 6 months along with pathologic fractures in the right humerus and the left femur for the past 2 months. Radiology revealed multiple lytic lesions throughout the skeletal system. The breast swelling was approximately 6 cm x 6 cm. The swelling was cystic-to-firm in consistency, with ill-defined margins. The skin overlying the swelling was red and had a peau d'orange appearance. There was no nipple discharge or lymphadenopathy. A differential diagnosis of breast carcinoma with multiple bone secondaries, carcinoma of unknown primary origin with breast abscess, or breast secondary or a plasmacytoma with multiple myeloma was made. Fine-needle aspiration cytology revealed sheets of immature and mature plasma cells, suggesting that it was a plasmacytoma.
authors.affiliation: Department of Medical Oncology, Institute Rotary Cancer Hospital, All India Institute of Medical Science, Ansari Nagar, New Delhi, India. ajayajaygupta2002@rediffmail.com
authors.forename: Ajay
authors.initials: A
authors.lastname: Gupta
authors.forename: Lalit
authors.initials: L
authors.lastname: Kumar
authors.forename: Manju
authors.initials: M
authors.lastname: Aaron
mesh_terms: D000038:Abscess / Q000473:pathology; D000328:Adult; D044963:Biopsy, Fine-Needle; D001859:Bone Neoplasms / Q000473:pathology* / Q000556:secondary; D001943:Breast Neoplasms / Q000473:pathology*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D009362:Neoplasm Metastasis; D010954:Plasmacytoma / Q000473:pathology*