Glad you were able to be at tumor board. Didn't you find the increased your trust in the process and the quality of thought and decision making that goes into your treatment planning?
Generally, the concurrent platinum based chemo is there primarily for enhancing the effectiveness of the radiation. Chemo can kill micro cancer cells which may be the secondary benefit. Maybe the stronger doses at lesser frequency is better at obtaining this second benefit. This makes sense as he had no prior chemo treatments.
In my case, I had induction TPF, a series of 3 cycles at 3 weeks for 9 weeks. This was Monster Drano Deluxe and beat down any micro cells. I think this provided the option to go with weekly lower dose Carboplatin during concurrent chemoradiation in order to support the primary goal of enhancing the radiation.
Given
HPV+ status this cancer is a slow grower so I feel like between induction and chemo-rads all the cancer was beat down as much as possible and loading up on Cisplatin would be overly aggressive.
Sounds logical but I've been to the 420 doc today so this can be all blue smoke. :-)