Primary osteosarcoma of breast

Primary osteosarcoma of breast is an extremely rare entity with a poor prognosis. Although resection is the main treatment, the optimal treatment remains uncertain. It has early tumor recurrence with a propensity for hematogenous spread, most commonly to the lungs rather than lymphatic spread. Herein, we report a case of primary osteosarcoma of the left breast in a 50-year-old female. Her metastatic workup did not show any evidence of regional or distant metastasis. The patient was treated by simple mastectomy with axillary lymph node dissection followed by adjuvant chemotherapy. The patient is disease free at a follow-up of 11 months.