As of yet there is nothing that we can physically point to and say "A-HA! That is the mind!" So according to this definition the mind does not exist and the idea of dualism must be put to rest.
What's your take on the meaning of "existence" and do you see a dualistic concept of the mind ever fulfilling that definition?
I believe that something truly exists when it is able to exert an empirically measurable physical force or change upon an object or being.
If we can somehow prove that the mind functions to control some aspect of our being then I believe that it's entirely possible for the mind to exist.