How would you manage DCIS diagnosed in the first trimester of pregnancy?

During the first trimester of pregnancy organogenesis takes place and thus the risk for teratogenic effects of systemic therapies are the greatest. Given that DCIS is a non-invasive form of breast cancer associated with excellent prognosis, my preference would be to wait until at least the second trimester before the patient undergoes breast surgery. I do not think that the risk of disease progression in cases of DCIS is great enough and would outweigh the fetal risks associated with general ane...