title: Primary osteosarcoma of the breast: a case report.
abstract: We report a rare case of primary osteosarcoma of the breast in a patient who presented a calcified fibroadenoma one year before the appearance of the malignant lesion. We describe the follow-up of the patient and the discovery of a similar osteosarcoma in the other breast one year later.
authors.affiliation: Center of Senology Drs Crèvecoeur Liège Belgium.
authors.forename: Julie
authors.initials: J
authors.lastname: Crèvecoeur
authors.affiliation: Laboratory of anatomy and pathology CHC St-Joseph Liège Belgium.
authors.forename: Véronique
authors.initials: V
authors.lastname: Jossa
authors.affiliation: Department of medical oncology CHU Liège Belgium.
authors.forename: Christine
authors.initials: C
authors.lastname: Gennigens
authors.affiliation: Center of Senology Drs Crèvecoeur Liège Belgium.
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Parmentier
authors.affiliation: Center of Senology Drs Crèvecoeur Liège Belgium.
authors.forename: André
authors.initials: A
authors.lastname: Crèvecoeur
keywords: Breast cancer; fibroadenoma; osteosarcoma