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

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

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%)