I have not heard of anyone just removing one node, especially for a stage IV. From the majority of the research I have read, they should have at the very least removed all the nodes in levels 1-3. Do you know what size the node was and what level it was found at? My understanding is that once it reaches the nodes, it can spread to other parts of the body, which is why they like to remove those nodes even if there is just micro-metatsis.

I understand he may have some financial obligations, but at the very least, I hope that the second opinions will encourage him to look for more information on his situation than what his current team is providing him.