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Parameters of gastritis grading according to the updated Sydney system[20].
| Corpus | |||||
|---|---|---|---|---|---|
| No inflammation (G0) | Mild inflammation (G1) | Moderate inflammation (G2) | Severe inflammation (G3) | ||
| ANTRUM | No inflammation (G0) | Grade 0 | Grade I | Grade II | Grade II |
| Mild inflammation (G1) | Grade I | Grade II | Grade II | Grade III | |
| Moderate inflammation (G2) | Grade II | Grade II | Grade III | Grade IV | |
| Severe inflammation (G3) | Grade III | Grade III | Grade IV | Grade IV | |
