What can i expect if i've been diagnosed/treated for breast carcinoma in situ?

Excellent: Very good news. In situ or non-invasive breast cancer is stage 0. Follow your oncologist's treatment recommendations, have yearly physical examination & mammograms. Should have an excellent long term outcome but keep a watch out for new breast lesions.

Should be fine: You will need to have a surgery to remove the breast carcinoma in situ. In addition to that -if you have a lumpectomy- you would need to get an a radiation therapy following the surgery to reduce risk for recurrence and tamoxifen would be recommended to take for 5 years. You should have a mammogram yearly basis and self breast examination is recommended. Prognosis is good as it is not invasive.