Gestational breast cancer is occurring with increasing incidence because more women are delaying childbirth into their thirties and forties. Although breast cancer during pregnancy or within the first year postpartum is occurring more often, there is still some confusion regarding its treatment. Although breast conservation therapy has evolved as the major treatment in breast cancer, it has been thought that pregnancy was a contraindication for this type of breast cancer therapy due to risks imposed on the fetus by chemotherapy and radiation. However, recent studies have shown that the use of chemotherapeutics during the second and third trimesters is possible. Also, if chemotherapy is initiated after a lumpectomy, radiation can be withheld until after the birth of the baby when the cancer is detected in the second or third trimester.
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