Cir Cir
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Recurrence of breast cancer has been defined as the presence of a new local or distant tumor after a year of initial treatment. The aim of this study was to assess the prevalence and characteristics of breast cancer recurrence in women diagnosed with breast cancer in northwestern Mexico. ⋯ In the late stage of breast cancer, HER2-positive expression in women with ER positive, axillary node involvement and metastases is associated with a higher frequency of recurrence and death.