I was recently diagnosed with high grade DCIS with microinvasion. The initial diagnosis was for straightforward DCIS, but a second biopsy after an MRI showed it to be more advanced, with a smaller secondary lesion. The whole area that needs to be removed is approx 4cms. I'm told I can have a wide local excision with radiotherapy, but that I may loose the nipple because the main lesion is very close to it. Because of the size of the affected area, in relation to my "relatively modest breast size" my surgeon believes I may go on to need a mastectomy because it will be hard to get clear margins. For peace of mind, and to avoid a second surgery I'm considering going straight for the mastectomy and in fact would possibly prefer a bi-lateral. I feel I'd rather be balanced even if that means removing both breasts and have the option not to have to match my remaining breast by always wearing a form. I'm in the second half of my 50's with children and grandchildren and am sure that I do not want to have re-construction. Has anyone else had a similar diagnosis? Were you pleased with the outcome of your surgery? I'd appreciate any advice to help me decide how to progress.