Can triple negative breast cancer recurrence be considered rare after 5 years?

Not really: The chance of having breast cancer recur is about the same for every year that you are alive. The chance of having cancer come back in the tenth year after treatment is not significantly lower than having it come back in the fifth year after treatment. For more info: http://www.Ccij-online.Org/article.Asp?Issn=2278-0513;year=2012;volume=1;issue=4;spage=201;epage=205;aulast=saha.