Hi Sarah,
The doctors didn't mention anything about ND before or during my Dad's treatment at all.
It was after treatment on the 1st month follow-up (before scans) that they mentioned it and then on the 2nd month follow-up (with CT and MRI scan results) the rad dr suggeted we see the surgeon to discuss ND. Scans showed tongue tumour is gone and nodes shurnk 50%. He had a PET afterwards and it's negative.
Seems no set way of doing things; some dr's do ND's regardless of scans as a precaution and some do them if scans show any areas of concern.
Lisa