Embolization was initially suggested twice for me. Unfortunately, upon further study and consultation with all the medical people involved it was found out it would not work at that time for me because in one case the tumors were too close to a vital vein and in the other case, a closer exam of the scan showed too many spots to treat that way.
But my understanding is that it is minimally invasive, it requires very little surgery (just a tiny opening in the groin which is not even stitched -- more like a little cut which heals very fast), and my understanding it is targeted.
I was told the side-effects would be minimal -- but again I was not able to have it done.
Best of luck and always keep up hope.