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Table 1 Atrophy in the gastric mucosa: histological classification and grading [26]

From: Relevance of vitamin D deficiency in patients with chronic autoimmune atrophic gastritis: a prospective study

0. Absent (= score 0)
1. Indefinite (no score is applicable)
2. Present Histological type Location & key lesions Grading
Antrum Corpus
2.1. Non-metaplastic Gland disappearance (shrinking) Fibrosis of the lamina propria 2.1.1. Mild = G1 (1–30%) 2.1.2. Moderate = G2 (31–60%) 2.1.3. Severe = G3 (>  60%)
2.2. Metaplastic Metaplasia: – Intestinal Metaplasia: – Pseudo-pyloric – Intestinal 2.2.1. Mild = G1 (1–30%) 2.2.2. Moderate = G2 (31–60%) 2.2.3. Severe = G3 (>  60%)