Synchronous breast cancer
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Synchronous breast cancers are two (or more) primary breast cancers that occur in either breast at the same time.
Up to 10% of all breast cancers may be synchronous (particularly found with the use of breast MRI). The occurrence of bilaterality is greatest with invasive lobular carcinoma.
With MRI screening, there may be a 4-10% rate of contralateral breast cancers when a unilateral breast cancer is found 1.
Treatment and prognosis
The survival of women with synchronous breast cancers is worse than those with unilateral disease 3.
- metastasis to the breast from the opposite breast: unusual particularly if there is no other evidence of metastasis
- 1. Conant EF, Brennecke CM. Breast imaging, case review. Mosby Inc. (2006) ISBN:0323017460. Read it at Google Books - Find it at Amazon
- 2. Kim MJ, Kim EK, Kwak JY et-al. Bilateral synchronous breast cancer in an Asian population: mammographic and sonographic characteristics, detection methods, and staging. AJR Am J Roentgenol. 2008;190 (1): 208-13. doi:10.2214/AJR.07.2714 - Pubmed citation
- 3. Kollias J, Ellis IO, Elston CW et-al. Prognostic significance of synchronous and metachronous bilateral breast cancer. World J Surg. 2001;25 (9): 1117-24. World J Surg (link) - Pubmed citation