It sounds like you had an ultrasound of the breast done because you found a lump, and these are findings of the ultrasound study. I would definitely recommend that you discuss these findings in depth with your primary care doctor
, or whichever doctor ordered the study for you, as they know your case best and can give you the most appropriate recommendations about what to do next.
Whenever there is a swelling in the breast or in the armpit adjacent to the breast, the concern is that this might represent breast cancer. Also, persistent swelling of glands or lymph nodes in the armpit can sometimes be caused by other forms of cancer, such as lymphoma
. In your case, it sounds like the swelling is directly in the armpit and does look like a lymph node.
What to do next depends a lot on how long the swelling has been there, your age, and your family history. If there is another good explanation for why you might have a swollen lymph node in the armpit (for example, a recent viral infection, or a skin infection on the arm) then your doctor might choose to watch this for a while. However, if the lymph node has been present for a while, is growing, or if there is a strong family history of breast cancer, then they will probably want you to have a biopsy by a surgeon
to rule this out.