Unfortunately, breast deformity is a common occurrence after a lumpectomy followed by radiation therapy. It is best to wait 6 months or longer before pursuing reconstructive surgery, as this will allow for the inflammation from the radiation injury to resolve. When considering surgery, there are Multiple Treatment Options depending on the severity of the deformity. I recommend finding an experienced board certified Plastic and Reconstructive Surgeon in your area who can perform a thorough examination of your breast, and come up with the best solution that the would optimally restore a more natural appearing shape.
Thank you for your question and best of luck.
Gregory C. Park, M.D.