Angiosarcoma of the Breast: Case Report - Revista Brasileira de Ginecologia e Obstetrícia

Primary angiosarcoma of the breast is a rare tumor, which appears between 14 and 82 years, with an average of 35 years of age. Its predominant clinical aspect is a painful mass with diffuse increase in the breast and violet or blackened color. Equally to other cases of sarcoma, the medium size of the lesion is approximately 5 cm at the diagnosis. Histologically, it is characterized by the proliferation of endothelial cells that form vascular channels linked to each other infiltrating glandular structures and fatty tissue. Its histological diagnosis is difficult and not always the right diagnosis is immediately established, mainly in the cases of a low malignancy degree, due to limited biopsy material. Because of the difficult diagnosis and aggressivity, it is a neoplasia with ominous prognosis, due to frequent metastasis. In our service, a 18-year-old patient presented with a painful lump which grew quickly. It was biopsied and a hemangioma was diagnosed, a wide excision being indicated. Three months later, she suffered a tumoral relapse, that was biopsied again and mastectomy was indicated, because it was an angiosarcoma with low degree of malignancy. After other relapses, chemotherapy was indicated and later, radiotherapy. During radiotherapy she developed new metastases, and died of pulmonary metastasis.