Primary osteosarcoma of breast

Primary osteosarcoma of the breast: a case report

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.

Primary osteosarcoma of the breast with abundant chondroid matrix and fibroblasts has a good prognosis: A case report and review of the literature

The present study describes the case of a 77-year-old female with a recently self-detected, painless, 7-cm lump in the left breast, without evidence of metastasis clinically, who underwent mastectomy with dissection of the axillary lymph nodes. The tumor did not invade the chest wall and skin. The tumor was comprised of abundant chondroid matrix and fibrous tissue, with focal osteoid matrix, and was classified as a chondroblastic/fibroblastic variant. The tumor had a reverse zonal pattern. The tumor cells in the central portion were mainly spindle-like and sparse with minimal cytological atypia, while the remaining tumor cells in the periphery were mainly epithelioid, atypical and dense. Neoplastic osteoid woven bone or trabeculae were observed in the central portion of the tumor. No metastasis was identified in the axillary lymph nodes. The patient was alive without evidence of local recurrence or hematogenous spread at the 60-month follow-up.

Breast osteosarcoma 29 years after radiation therapy for epithelial breast cancer

Radiation therapy has a solid role in the management of breast adenocarcinoma. It significantly reduces the rates of disease recurrence. Nevertheless, radiation therapy is not without side effects and patients who have undergone breast irradiation are at increased risk for lung disease, sarcomas, acute leukemia and esophageal cancer. We present a case of radiation-induced breast osteosarcoma 29 years after radiation therapy and lumpectomy for breast adenocarcinoma. The patient had several disease recurrences after surgical resection and was found to have pulmonary metastases.