Classification of chronic atrophic gastritis
As early as in 1973, Strickland and other atrophic gastritis according to serological tests and the distribution of stomach lesions, will be divided into A-and B-type two separate types. A-type atrophic gastritis lesions were mainly seen in the gastric body more diffuse distribution of the normal gastric mucosa, serum parietal cell antibody, serum gastrin increased secretion of gastric acid and intrinsic factor reduced or lack of, high incidence of pernicious anemia, but also known as autoimmune gastritis. B-type atrophic gastritis lesions more common in gastric antrum, showing multifocal distribution, serum parietal cell antibody negative, serum gastrin were normal, normal or mildly reduced gastric acid secretion, without pernicious anemia, complicated by gastric cancer more easily, which is a kind of simple atrophic gastritis. Since then, Glass will also involving the gastric antrum, gastric body known as the AB-type atrophic gastritis.
In China, if by Strickland classification, B-type atrophic gastritis is more common, A-type atrophic gastritis is rare, and some patients with atrophic gastritis, both gastric inflammation, there are parietal cell antibodies, can not be included in the above-mentioned two types, so quite a few scholars have put forth for the specific situation in our country classification method, chronic atrophic gastritis were divided into A1-type, A2 type, B1-and B2-type. The classification based primarily on the situation of autoantibodies, serum parietal cell antibody-positive is a A-type, serum parietal cell antibody-negative is a B-type. A type medium is divided into two subtypes of gastric lesions of non-A1 type, antrum of the stomach lesions were type A2. B-type gastric body and antrum were based disease severity is divided into B1 type (gastric lesions than the stomach body weight) and the B2 type (gastric body lesions than the antrum or gastric body weight similar to gastric lesions persons) 2 subtype.
In short, the current chronic atrophic gastritis there is no complete unification of the classification, it is still used along the learning Strickland classification of chronic atrophic gastritis were divided into A-and B-type.
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