there are various clinics here in UK offering different types of massage for people with cancer. Shiatsu is pretty popular. One thing they all emphasise , though, is that the masseuse (sp?) should have experience in dealing specifically with cancer. some deep tissue massage techniques can, I was told, hasten the spread of the disease. so I'd probably want to ask that question of my practitioner. But in the right hands (no pun intended) it's great tool.
tim