I had something similar called fibromatosis. Lump on the same breast as the surgery and radiation. They also said was caused by the trauma of everything. The bad thing is that it reoccures and when they find one they have to remove and send to pathology because I guess it has stranding like BC and they can tell the difference without sending to pathology. They are very sore. Every little pain now scares me that I have another one but at least its not BC!!

Thank you for your response. My symptom was an ugly mole. I got a chance to see it after the biopsy and it did not look like fluid. It was a bit deep and was a solid mass.