If cancer is diagnosed once the woman is pregnant, the options will obviously depend on the type of tumor and the treatment needed (Surgery? Chemotherapy? Radiation therapy? Combinations?).
There are many cases treated, but it is true that in the first trimester of gestation there is a great risk of abortion and even malformations, and when it occurs in the third trimester, of premature birth, but in this case the collaboration of the multidisciplinary team that weighs the risks and benefits of the decision to take is fundamental.