Sorry to hear about your problem. Considering your history of breast cancer
, it is best to get these lymph nodes evaluated. You need to get a FNAC (needle test) done for them. This would make it clear whether they are due to cancer or some infection.
The itching is certainly not a sign of cancer and is probably an allergic reaction
. Once you have ruled out cancer in the lymph nodes, you can consult a dermatologist
for the itching.
Hoping for the best.