changing position of pacemaker

I have had a pacemaker on my left side for about 4 years. Last fall I had breast cancer, stage 2 in my left breast. After it was removed and I had 1 chemo treatment, I became very ill and was in ICU for 4 days. At that time decided not to continue with any chemo. Since my pacemaker is on the left side I thought I couldn't have radiation treatment. I was told yesterday that I could have it moved to my right side and have radiation. Is this moving a difficult or dangerous procedure?
Thanks,
Dori

[CCF HeartMD6]

Having a device extracted and re-implanted on the opposite side carries the same risks as your initial surgical implantation. This is a procedure that is done often for a number of different reasons (including yours). It should be carried out by an electrophysiologist with the appropriate pre-procedural testing to ensure there are no vascular problems on the side they plan on re-implanting the device.