i used massage therapy all through my treatment and I still go religiously. I searched for a therapist who specialized in cancer treatment patients. My therapist is trained in the vodder technique as well as reki,acupressure and more. This helped me tremendously through treatment as she helped move the lymph fluid around, relieve tension etc. My advice is GO but make sure you seek someone who has experience and the right qualifications.
I know that I was worried during treatment about different things such as what oils they use as well as sanitization of her towels and just in general as I was terrified of picking up something when my immunity was low. If you are finished treatment then that is not as critical but do make sure if she uses essential oils that they are safe for you.
Enjoy, don't hesitate.