Hey congrats to your hubby on getting through the process! He had 2 extra imrts than me, I also had to drop my last chemo because of my white count. normally I would say a neck dissection couldn't hurt ( recovery isn't too bad - pain very limited mostly numbness and stiffness - ) but since his node has been fried (I'm assuming it was targeted by radiation ) he should be good. If the radiation was enough to kill the node that you knew had cancer then it's highly likely it got any microscopic cells nearby - I'm assuming they did the whole area. Plus if you trust it to kill the BOT cancer - and tonsil then it should easily get any residual stuff.

I'm assuming he didn't have surgery for the bot and tonsil.

So why add more recovery time?
I know it may ease your mind but they don't just target the one node they generally paint all the odds to kill any microscopic cancer. That's actually why I went through the treatment - they said i was in a gray area since they'd removed "all" my cancer. I'm glad I did.

I had a lesion on my tongue - and one node involved - they removed 40 nodes, and my lesion, on day one of my treatment my rads guy told me I had a node highlight on the other side - my non neck dissection side. They rewrote my plan to include the right side, and deliver the same dosage - in less time so I finished on schedule. When asked all three doctors said it would take care of it if it was cancer (it was very small 3 mm, and never biopsied) it could very well have been an inflammation, or infection. But I am a better safe than sorry person.

Wait for his results to come back, ask the question of the doctors, and just keep an eye on his neck, and check it regularly between follow ups.

Good luck and take care.