Lymph node enlarged

ava55

I had a mastectomy two years ago following 8cm DCIS. They found 5mm of tumor and sent it for oncotype but not enough to be analysed so no chemo. All lymph nodes clear and had reconstruction.

Last year I felt a raised part under my arm same side as mastectomy. Had an ultrasound and nothing showed up so consultant thought it was just tissue. Roll on a year and I just had my yearly mammogram and ultrasound and while mammogram was clear the ultrasound showed one lymph node that was enlarged in the same area as the raised part I felt last year. They did a biopsy and are arranging a cat scan. Concerned that it’s back! Anyone had the same thing? Worried what’s next.