The number of breast cancer survivors has increased steadily due to early diagnosis and advances in treatment. It is estimated that there are 3,000,000 women with a history of breast cancer in the United States, which corresponds to 41% of all women with cancer in that country. These patients are exposed to the appearance of a new tumor, local recurrence, other types of cancer, and adverse effects of the treatment performed. There are differences in the literature on the best way to follow up such patients, which contributes to a variation of conduct among the entities that guide daily practice.
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