Breast cancer is increasing and is the most common cancer among females in Brunei Darussalam. Most are ductal carcinoma. We report a case of a 40-year-old woman who was diagnosed with primary angiosarcoma of the right breast, a rare condition. To the best of our knowledge this is the only reported case in Brunei Darussalam. She underwent lumpectomy followed by mastectomy as the resection margins were not clear. No adjuvant therapy was given because the size of tumour was small, there was no residual tumor in mastectomy specimen and she had no distant metastasis.
Angiosarcoma of the breast ; Breast Neoplasm ; Breast Self-Examination ; Tumour

The exact local prevalence of angiosarcoma of the breast is unknown. The challenge in pinning down the incidence is due it its rarity and possible difficulty in diagnosis since it may mimic other benign breast disorders. We are reporting a case of a 21-year-old female Filipino patient who presented with a 2cm x 2cm palpable mass on the upper outer quadrant of her right breast initially diagnosed through cytology as hemangioma and was later found out to have angiosarcoma of the breast after mastectomy. This is to illustrate the clinical presentation, methods of diagnosis, surgical management, and consequently better understanding of this clinical entity.

Human ; Female ; Adult ; Angiosarcoma Of The Breast ; Hemangiosarcoma ; Mastectomy ; Breast ; Hemangioma