I'm not sure if this will help cocoapop on here has a father with a similar situation. They had a recurrence after initial treatment (and other treatment was ineffective - he did not have lung involvement but the cancer was persistent) - there is a lab in California that requires a fresh biopsy sample within 24 hours - they take his specific tissue and test it to see what it responds to, and then suggest a treatment plan, this is more effective as im sure you understand because it's specific to his cancer and his DNA - rather than using the standard treatment. It might be worth a try - compared to most hospital procedures etc it's reasonable price wise ( I think it was 500) anyway he's not "cured" but at the present he's stable - hugs, prayers and luck to you.