Thank you all for your input. You are giving me a lot to think about. I agree that I need to seek a third opinion. (And I may have misunderstood what the Philadelphia radiation oncologist was saying about 6 weeks of radiation not being sufficient.)
Glenn, MSKCC is indeed the Cancer Center that recommended the 6-week radiation treatment. I should say, though, that the doctor there did tell me that he ~thought~ this would be his recommendation, but he still needed his pathology group to review the slides from my glossectomy post-op (which they now have.) So, I suppose that the results of MSKCC's analysis of the pathology slides might change his recommendation.
Bob