Breast Cancer spread to the skin!

Hi there, I am wondering if anyone out there have had breast cancer returning in the skin!!! I had a mastectomy and sentinel node removed 10 years ago. A year ago the scar from the sentinel node removal started itching. My GP sent me for an Ultra Sound. Nothing showing ! 6 months later small itchy pimple size lumps had developed. US again, but nothing showing! 1 year later the lumps are a little bigger and I see my doctor at the Outpatient Surgery at the Hospital. They are not concerned but I want to know what is making these lumps in my armpit, so they do a biopsy and find "small nests of hormone positive breast cancer cells". LABC , Locally Advanced Breast Cancer. They suggest a full on radiation and chemo treatment but I am not ready for that yet!!! As I generally feel really good. Now I have also noticed thickening of the skin on my chest wall. My doctors have said this is uncommon and therefore not easily picked up by them. I would love to hear from anyone who has some experience with this. Thanks in advance😀 Ginny100