Introduction.

Primary breast angiosarcoma is a malignant pathology derived from the endothelial cells of the blood vessels of the breast. They are potentially aggressive regardless of histological grade, reason why its prognosis is poor and treatment requires surgical resection plus radiation therapy and occasionally chemotherapy depending on the degree. Its pre-surgical diagnosis is difficult since the clinical and imaging characteristics are nonspecific, and the definitive diagnosis is only made by means of pathology studies.

Clinical case.

A 49-year-old patient was admitted to the breast surgery outpatient clinic due to clinical symptoms of 5 months of evolution consisting of the appearance of a painful mass in the left breast. Imaging of the lesion with ultrasound report BIRADS 4a and a tricot biopsy was taken with histological diagnosis of vascular lesion with atypia. It was decided to take the patient to a simple mastectomy, with a final report of breast angiosarcoma but with a margin compromised by a tumor for which she was reoperated. She received 33 cycles of radiotherapy and continued in follow-up for two years. During this period, the patient presented inflammatory changes in the surgical scar for which a punch biopsy was done with histological report of vascular atypical lesion. Surgical resection was performed with final report of negative pathology for residual angiosarcoma. Nowadays the patient continues imaging follow-up without evidence of a tumour relapse

Conclusion.

Primary breast angiosarcomas are a rare malignant pathology, very aggressive regardless of its histological grade, for which it is important to perform a timely histological diagnosis and oncological treatment.

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