Hi...........I am sorry you are freaking out!! I know the feeling!!! It sounds like the Ortho is on top of his game, getting you in for more tests. It doesn't mean it's cancer, but it definitely should get checked out. Was your mammo last year normal?? The enlargement could be many things...remember, it doesn't mean worst case scenario. Believe me, I know it's hard not to worry, but kudos to your dr for getting you in for further tests so quickly. Please let us know how it goes. Good luck and I will be sending good thoughts your way!!