The Operative Link on Gastritis/Intestinal Metaplasia (OLGIM) stages chronic gastritis based on the grade of intestinal metaplasia. This may be more accurate than OLGA staging and may correlate better with the risk of developing gastric cancer.
Patient selection: chronic gastritis
Histologic parameters:
(1) intestinal metaplasia in the gastric corpus
(2) intestinal metaplasia in the antrum (including the incisura angularis)
Gastric Corpus
Gastric Antrum
Stage
no IM
no IM
0
mild
I
moderate
II
severe
III
mild IM
no IM
I
mild
I
moderate
II
severe
III
moderate IM
no IM
II
mild
II
moderate
III
severe
IV
severe IM
no IM
II
mild
III
moderate
IV
severe
IV
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