Do you mean they only removed one node altogether and it was cancerous? Or did they remove more nodes and only one was cancerous?

For what it's worth, I have read that there is some research on sentinal node identification and removal for oral cancer (it is already being done for breast cancer), so even if they only removed one node, there might be some good reason for it (although I would think if it had been identified as a sentinal node and was cancerous they would go on and remove others, as they do in breast cancer). I would definitely ask more questions about what specifically they did and why, though.

Nelie