Hi - Generally speaking, chemo is the first line of defense - it's much more systemic than radiation, finding and killing cancer cells wherever they've traveled. Radiaiton is more of a "mop up" action, taking care of anything very localized (i.e., right at the site of the tumor). It's best ot do an "all-out assault" with chemo first, then finish up with radiaiton, if necessary; oftentimes, if you've had chemo, you don't even need radiation. Good luck - PJH
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