What elective areas do you cover for a primary oropharynx SCC isolated to the pharyngeal wall?

In addition, you would also cover the entire retropharyngeal lymph node axis - jugular foramen down to hyoid, both medial/lateral nodes. If either side of neck is N+, can consider IB/V.

And, then treat as you would other head and neck - GTV + CTV + PTV to high dose, intermediate risk can be higher ...