FS: "What we do know is that there are certain cancers that are more difficult to treat than others. Probably the two toughest from my perspective of a clinician is pancreatic cancer. That is such a tough cancer. "

MS: "Because it's so lethal?"

FS: "The pain from it. Oh, yes. The pain from it. The pain from it is just awful. It really is. It's a neuropathic pain."

MS: "The nerve bundles? "

FS: "Yeah. And then the other one that's really hard ... and I just thought of this last week, but it's variable, it's multiple myeloma. That's the bone pain."