I am very sorry that your Husband is having this again. I can't help you but only empathize and hope I can at least bring you a moment of comfort in that I am witnessing my husband with his stave iv colon cancer except it metastisized to his liver...as a very unprofessional and insensitive Oncologist said to my husband and I at our second opinion, "look at them, they're all over the place...there aren't any margins"...in response to looking at his CT scan of the cancer tumors in his liver. I thought, "what the heck are 'margins'"?
After being at one facility for 5 rounds of chemo and it not working and the provider not willing to change the chemo mix, we moved to another facility for his care. Unfortunately, the mistake of the first provider, I feel, was devesatating to my husbands treatment.
My prayers are with you as you battle ...search the internet for information on what your husband has, you will probably find info...some you want to see and some you don't, as you might already know.
Take care