Each breast contains 15 to 20 lobes of glandular tissue, Dcis and breast cancer like the petals of a daisy. Because DCIS is non-invasive, chemotherapy—which sends cancer-killing Dcis and breast cancer throughout the body and can have side effects including nausea and vomiting, hair loss, fatigue, and fertility problems—is not used as a treatment option. However, some kind of lymph node biopsy might be undertaken just to be sure, see sentinel node biopsy. Together you can make a decision about whether or not you should have radiation therapy. Factors that may play a part include your lifestyle, your environment and genes passed to you from your parents.