Gastritis status in women with gastric pyloric gland adenoma in Baltimore (A) and Bayreuth (B)
| (A) Baltimore | |
| Normal stomach | 15.0% (FAP) |
| Active Helicobacter gastritis | 0% |
| Ex-Helicobacter gastritis | 5.0% |
| Chemical gastritis | 3.0% |
| Autoimmune | 77% |
| (B) Bayreuth | |
| Normal stomach | 3.7% (probably FAP) |
| Active Helicobacter gastritis | 9.2% |
| Ex-Helicobacter gastritis | 13.8% |
| Chemical gastritis | 10.1% |
| Autoimmune | 63% |
FAP, familial adenomatous polyposis.