So sorry to hear that. I know how devastating it is to hear those words. After going thru chemo, another scan was done that showed cancer in several other places including my groin area. I was told that the surgery would not do me any good since it had spread. The doctor said it was inoperable. I asked him to please do a biopsy and he consented. It may not be the same for everyone, but after a biopsy of the groin and upper chest area came back non cancer, they went ahead and done a radical cystectomy. The groin area and chest area they concluded was inflammation in lymph nodes caused by the RA. Praying that all goes well with your son!