Wouldn't you have to assume that it's not primary, then? I feel that she would a Whipple even if the odds for success were low, if this is indeed a primary tumor.
Wait, I'm confused- She was also treated for pancreatic CA in the past? I thought she was only treated for lung CA?
Yeah she had surgery in 2009 as well.
With regards to your first point, what's a bit confusing is that it's reported she has had a mass resected AND a stent placed. So perhaps this mass was in close enough proximity to affect the duct but still not warrant a full whipple. It could be primary or a met.