| Case | Hp | First treatment | Clinical course |
| 1 | + | PPI administration → healed | recurred after Hp eradication |
| → | PPI readministration → healed | ||
| 2 | − | PPI administration → resistant | surgery (for penetration, SPV) |
| → | maintenance of healing without PPI | ||
| 3
| + | PPI administration → healed | recurred after Hp eradication |
| → | PPI readministration → healed | ||
| 4 | − | PPI administration → healed | continuous PPI administration |
| → | maintenance of healing | ||
| 5 | + | PPI administration → healed | recurred after Hp eradication |
| → | PPI readministration → healed |