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Medicina (Buenos Aires)

versión On-line ISSN 1669-9106

Resumen

CHIRIFE, Ana M. et al. Primary sarcomas of the breast. Medicina (B. Aires) [online]. 2006, vol.66, n.2, pp. 135-138. ISSN 1669-9106.

Primary sarcomas of the breast are extremely rare with less than 1% of all malignant tumours of the breast reported in literature. At our Institution 1315 malignant tumours of the breast were diagnosed between 1999-2004; nine of them corresponded to primary sarcomas: angiosarcoma (3), leiomyosarcoma (1), low-grade fibromyxoid sarcoma (1), dematofibrosarcoma protuberans (1), liposarcoma (1), osteosarcoma (1), malignant peripheral nerve sheath tumour (1). Histopathological specimens stained with routine techniques and immunoperoxidase were reviewed; proliferation index and p53 over-expression were also determined. Patients´ clinical reports were also reviewed to determine prognosis (favorable and unfavorable). The incidence observed (0.7%) is similar to those already published by others authors. Proliferation index was correlated with type of evolution, being an unfavourable prognosis factor when it was equal or major to 30%. Most of the tumours (67%) showed p53 (mayor or equal to 20% of nuclear staining) over-expression but this did not show a direct relationship with the evolution of each neoplasm.

Palabras llave : sarcoma; breast; prognosis.

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