answer:What are you trying to say? A “colonography a year ago and that showed I had a kidney stone” has nothing to do with a “tumor in my stomach” . Comments you have before show you have a concern with your stomach, including GERD and other things. The Doctor is telling the truth. The Doctor said “yes, I think” to your direct question about a TUMOUR being able to found in your stomach. GERD is treatable—take an antacid or Prilosec (omeprazole) for Heartburn relief.