Hey Paul!
Sounds like you really know your stuff and been through a lot of stuff! They only found cancer had invaded one of the lymph node‘s. I guess the surgeon decided to take out the lymph nodes as a precaution because nothing showed up on the CT scan but because the tumour was thicker than 6 cm it had a 20 to 30% chance of spreading to the lymph nodes. I’m glad he made that decision.