Yahaya, James Joseph Primary Osteosarcoma of the Breast with Extensive Chondroid Matrix in a Teenager Female Patient: The Paradoxical Diagnosis in Breast Mastopathy. [electronic resource] - International medical case reports journal 2020 - 11-17 p. digital Publication Type: Case Reports; Journal Article ISSN: 1179-142X Standard No.: 10.2147/IMCRJ.S233674 doi