I found a lump under my left arm 3 weeks ago, it was painless and small so I never thought anything about it until this past week when it was MUCH larger. It now can be seen buldging out of the arm pit. I went into a doctor and he says it is less likely to be breast cancer due to my age, 31, but ordered an ultrasound of the auxilary arm pit. The breast exam he did checked out clean, no lumps. What is the chance this lump being some form of cancer? I have other symptoms along with the lump. I have extreme itching all over my body that comes and goes, my hair falls out (more like a major thinning, not clumps, but a handful with each shower) has been for a few years now. I've had two children ages 8 and 2. Breast cancer doesn't run in my family but other cancers are very thick in my family tree. Should I be worried about cancer, if so what kinds, and what can be done about them? How likely is this to turn out to be hodgkins?