Breast sarcoma originates from the connective tissue of the breast and can be classified as primary or secondary. Secondary sarcoma develops following radiotherapy for malignancies in the breast or other thoracic regions. Fibrosarcoma, angiosarcoma, and pleomorphic sarcoma represent the main subtypes of breast sarcoma. The median age of onset is 49.5 years. It is typically characterized by a unilateral, well-defined, firm, rapidly growing, and relatively large mass, which may involve the skin, leading to skin thickening. The incidence of lymph node metastasis is relatively low. Multidisciplinary treatment involving complete surgical resection with negative margins, combined with radiotherapy and chemotherapy, is often required.