if by "tumors" your mean "cancer" then yes. all tobacco products cause that after long term use.
Metaphor Reviewed by Metaphor on . are you serious.. alright, bought a box of grape rillos tonight. out of the blue, one of my uhh, people, is like : "WHY THE FUCK DID YOU GET THESE THEY CAUSE TUMORS", man was SERIOUS. no jokes... like for real killed my high and everything... okay so uhh do they cause tumors? damn... Rating: 5