title: Leiomyosarcoma of the breast in a patient with a 10-year-history of cyclophosphamide exposure: a case report.
abstract: A 50 year old woman with a 10-year history of systemic lupus erythematosus (SLE) and intermittent low-dose cyclophosphamide therapy developed a palpable mass at the periphery of her left breast. Ultrasound guided core biopsy revealed a spindle cell neoplasm characterized on final pathology as a low grade leiomyosarcoma.
authors.affiliation: 300 Pasteur Dr, H3625 Stanford, CA 94305, USA. wapnir@stanford.edu.
authors.forename: Jennifer
authors.initials: J
authors.lastname: De la Pena
authors.forename: Irene
authors.initials: I
authors.lastname: Wapnir