:) HI Nadi,
Sorry to hear about your stress but hopefully you won't need to go any further than the antibiotics as that will solve the problem.
As you probably gather Radiation burns usually occur quickly during treatment, so if not fungal yours is probably an localised infection maybe through a small burn/ friction spot that has just grown slowly. My cellulitis infection post op spread like a raised wave across my breast. I also remember a neighbour who had a terrible reaction to radiation with the skin burned from most of her lower breast and unable to wear a bra and she couldn't tolerate not to wear one for weeks until finally a knowing a Doctor fashioned up a sling for her breast which cleared it off the skin and it finally began to heal. Not sure if this would help you too but it does depend on the size of your breast! I had 2 nasty radiation burns that I had to use sanitary towels on top of the dressings to stop my clothes getting soaked at work but they did heal up quickly. Last time I used sanitary products!
Meanwhile I think that it probably is unlikely that it is angiosarcoma or AVP as it is an accumulative long term blood vessel abnormal development post radiation starting generally from 7-20 years. Since the advent of sentinel node biopsies and better management more and more women having breast conserving surgery and living longer so perhaps some of the long term effects of radiation treatment may only be showing now. I believe associated lymphedema of the breast is also possibly a precursor, as most women with arm lymphedema (a possible precursor to Stewart-Treves Syndrome) had positive nodes removed and were more likely to have had mastectomies. Certainly you should talk to your Doc if things aren't settling. You would probably be a lot more educated about it than your doc even though she has been through the mill herself!
Mimsi
-I am in allied health myself.
