How many PTVs and what doses do you utilize for a cT3N0M0 squamous cell carcinoma of the larynx receiving definitive concurrent chemoradiation?

I typically think of 2 targets - a clinical target and a subclinical target. Whether one wants to divide the subclinical target into 2 targets - an intermediate and lower risk target is an option, but whether it is an absolute is a matter for debate.

Traditional treatment was large fields followed b...