How can there be a term called "intestinal metaplasia" of stomach Hello everyone, Ok Stomach's normal epithelium is simple columnar, now in intestinal type of adenocarcinoma of stomach it undergoes "intestinal metaplasia", due to gastrititis. Now intestine also has simple columnar epithelium. So in this case it has gone from columnar to columnar, so how can there be any metaplasia here. Also in gastritis why does stomach epithelium change, naturally its epithelium is able to withstand acid. Thanks!!