I dunno. Just searched on "tumor" by Title (Date) and it showed. You're not the first person to experience this, though.
I'd just read the article this morning-- that's the only reason I thought to check. Probably wouldn't have posted anything but there were 100+ comments on the other thread I wouldn't want anyone to miss.
Been guilty of the same thing myself-- so I'm definitely not throwing stones!
Maybe it had something to do with the added tagline in the title.