SBRT to lymph node

As some of you know, my husbamd was diagnosed with Stage 4 pancreatic neuroendocrine cancer 18 years ago. It has been 18 years of playing whack a mole and it looks like the county fair is back in town 😌. He has a lymph node located near the aortic valve that has been increasing over the past year and it's time to address it. He'll be consulting with the radiation oncology dept. at Mayo Phoenix to discuss SBRT targeted radiation. This same node was previously and successfully treated with SBRT 10 years ago so we are hopeful it will be equally effective this time.
I'll keep you posted as we go down this path.