I had 2 large masses in both arm pits and they were surgically removed in 2005 pathology came back begin breast tissue. I have since had another rapid onset this time with terrible pain under the right arm. The er doctor lanced it thinking it was a abcess but it wasnt sonagram showed a mass filled with blood . What is this and will it have to be removed surgicaly. I have also had several flu like symptoms and high white count. I am on my second round of anitbiotics and pain meds the swelling has not reduced and the wound from incision is not draining.