Primary angiosarcoma of the breast in a 21-year-old female: A case report.

We present a case of primary angiosarcoma, an exceedingly rare malignant breast lesion, in a 21-year-old female patient with unilateral breast enlargement. Primary angiosarcoma is an aggressive form of breast cancer with variable presentation and limited clinical experience due to the rarity of the disease. Despite an initial diagnostic challenge, this report showcases the importance of a systematic diagnostic approach and multidisciplinary management in the context of uncommon breast lesions in young patients.