0_Apprentice
Cancer is so awful, but I really don't know how it works or why its so hard to cure.
1_Wizard
Cancer is kind of an umbrella term for a group of diseases that involve abnormal cell growth. The cells go out of control and invade the other parts of the body. 
0_Apprentice
Ohh so is it just hard to near impossible to stop the intrusive cell growth?
1_Wizard
If you remove one tumor, there's the chance another one will grow somewhere else. Benign tumors, in contrast, don't spread. They're easily removed and treated. 
0_Apprentice
Damn that's insane. So how does chemo work? Does the radiation slow or stop the growth of these cells?