Are there different types of dcis?

Yes: Dcis may be classified into different types based upon the pattern of growth when viewed under a microscope. These include comedo, papillary, cribiform, and solid. The comedo form tends to have the highest potential for becoming invasive if left untreated. Dcis may also be classified by how rapidly the cancer cells are dividing; this is referred to as the grade of the cancer.

Cancer of breast: Dcis is ducal carcinoma in situ. This means there is an early cancer inside a breast duct, but it is isolated in the duct. This means that it has specific treatments available, and has a better prognosis.