@mlk9
I keep telling my family it feels like a chunk of cement. On top of that I have axillary webbing (cording) three times now. Finishing up with my physical therapist who suggested I get back to wearing the swell spot under my compression bra. What a difference that has made in that "cement" area as well as axillary webbing. She explained the radiation causes scarring which presses on lymphatics which causes the axillary webbing and/or lymphedema. The numbness in my arm has gone down and the "cement" area in my breast has softened up. She explained the swell spot helps the lymph system flow out. Here is a site that shows what it looks like, but the can be purchased anywhere (with my medical plan, they are covered): https://www.amazon.com/SwellSpots-Breast-Swell-Spot-Small/dp/B07QV9KRYB/ref=sr_1_7