Summary
Twenty-eight (1.69%) cases of primary synchronous bilateral breast cancer (PSBC) out of 1,654 new cases were studied. PSBC compared with unilateral cases had a significantly higher (p<0.001) first degree family history of breast cancer; high frequency of subareolar location; no predominance of lobular and non-invasive types; no significantly different percentage of pathological stage I presentation. As there is no complete agreement on what constitutes a PSBC, studies should be carried out to fomulate a more precise definition of this entity.
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de Ustarán, J.K., Meiss, R.P. Primary synchronous bilateral breast cancer: Epidemiological approach. Breast Cancer Res Tr 12, 311–314 (1988). https://doi.org/10.1007/BF01811245
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DOI: https://doi.org/10.1007/BF01811245