Right you are Mark, as I said, this was my personal opinion,that seemed like common sense, i tried to dicuss it with one our docs, who told me trental didn`t work, so that was the end of that discussion. Frank`s neck showed major improvment, but since the cancer was still present, i don`t think it good in our case. As I said before, I`m very hesitant to recommend, anything than to get the best possible docs and treatment center you can find. Find docs you can trust and willingly share imformation with you. I was fortunate to get my nurse`s training at a major teaching hospital, right along with medical students, I was taught to have a healthy disrespect for docs, and to question anything I wasn`t comfortable with as a nurse...Frank had a doc, who I actually told him to 4 letter word himself, fortunately, he knew me well enough by then that he did accept my apology, and to this day, I still have his home email address. I try to stay away from advocating any medical treatments and only try to share our personal experiences......Dee