Posted this somewhere else and figured I'd blog it. I've been a Reiki Master/Pranic Healer since 1998.
Slight WARNING for using Reiki with Cancer patients. Please understand this is in no way meant to inspire fear or to say that cancer patients should not be treated.
I've been a Reiki Master for about 14 years and have worked directly with cancer patients; I've also discussed this with other Reiki Masters who feel the same way I do. PLEASE follow your own instincts however!
Because cancer is a rapidly growing "entity" it can sometimes use the positive energy we send to enable growth or even come out of remission! I'd recommend if you're beginning Reiki or using simple hands on techniques to not wory in the least and simply focus on loving transmission of energy. For high level Reiki practitioners who are able to envision through distance healing, many are able to use color energy (Pranic healing) - again if this describes you please just follow your instincts.
The warning goes mainly for Newer Reiki Level IIs or people who can direct energy to a certain place but don't yet have full vision for what's going on. If you strongly direct golden/white/green energy to a cancerous area it may cause the cancer to grow. Alternately if you simply send red/orange energy it can cause pain or restriction in diverse areas of the body.
I would recommend one ideal way for treating cancer as general or body-wide positive energy sent with the Reiki Level I positions, or prayer and love as an overall positive wish for healing.
For high level practitioners follow your own instinct or consult with a guide. If you choose to work directly on the cancerous area, consider using red or red-white on the growth/black area itself, or confine the area with blue or some sort of shielding technique.
Love and much light <3