Letro will work to a certain point to diminish the size of the lump but, as Tearbear stated once you have it the problem will persist. Only true way to handle it is by having it surgically removed & best done when it's a small lump. The larger it gets the more tissue they have to remove and more pain and discomfort it will be post surgery. (My friend just had it done, was out for 3 almost 4 weeks, they had to remove large lumps from both sides - $5800 for removal). If you run another cycle I'd definitely use Letro but, no guarantee that it will prevent it from growing larger.