The question is does it have the effects listed in the order they're presented? Because if it does I'd argue it reintroduces the growth. If it restores body parts and then cures mortal wounds I'm with you though.
I also have to question whether a cancerous growth would be considered a body part, relative to the spell. But given the apparent restorative nature of the spell, I doubt it would (re)introduce anything inherently harmful.