Chondroblastic osteosarcoma of breast in a case of phyllodes tumour with recurrence a rare case report

摘要

IntroductionPrimary extra osseous osteogenic sarcomas have been reported in many tissues of the body but their occurrence in the breast is extremely rare. It can arise as a result of osseous metaplasia in a pre-existing benign or malignant neoplasm of the breast.