Management of breast cancer diagnosed during pregnancy

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Abstract
Breast cancer during pregnancy is generally defined as cancer occurring during pregnancy or within 1 year of delivery, although treatment options are the most complicated when the disease is diagnosed during gestation. The challenges of treatment during gestation are discussed in this article. In general, a pregnant woman with breast cancer should be treated similarly to the nonpregnant patient, with specific recommendations tailored to gestational age at diagnosis, stage of the tumor, and the personal preferences of the patient. Despite the increasing literature focusing on treatment decisions, there are little prospective data regarding treatment or long-term outcome information to provide toxicity data that can be used to advise patients and guide decisions. Most of the retrospective and anecdotal data are based on the possibility of fetal loss or demise with specific treatment or treatment administered at specific times during pregnancy. Therefore, it is impossible to accurately quantify risks to the fetus or the mother, and decisions should be made after careful discussion between the patient, her family, and the medical team. The physician must have a clear understanding of the pharmacology and teratogenic potential of individual agents, thus limiting risks.

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