1. Sounds like Perineural Invasion, PNI, or other negative prognostic factor for recurrence or tumor spread. Being its micro, more surgery may not get it all, can't be seen or is adequate enough, so radiation can to a broader area.

2. The only thing I heard is doing light chemo. Meaning a small dosage to cause less toxicities, one that is not that toxic compared to others and or a targeted therapy, all which may be used as a radio-sensitizer to make radiation work better. I had so called light dose chemo, taxotere, Carboplatin, and Erbitux, a targeted therapy, at its usual dosage. No matter what they call it, all have some type of side effect.

3. A 2nd opinion is always good, but treatment shouldn't be delayed too long. They usually like to keep the total treatment package, including surgery, less than 100 days. I'm not familiar with the hospital.

Good luck with everything.