Originally Posted by FireSpark
From Book of Vile Darkness
That's all the pertinent information there is. The text doesn't specify that the ability does not work against magical diseases, so I would say that a Cancer Mage could potentially become death itself if exposed to this magic. Thankfully he couldn't do it himself, since the Cancer Mage PrC is a 10-level class that actually has nothing to do with magic at all. No caster progression, no magic prereq's, nothing. Rather silly name for it actually.
From what I understnad from what you ust quoted, yes he could, just take no more than three levels of cancer mage, the rest wizard.