Type A, Type B, and Non-atrophic Gastritis

The gastric cancer risk varies based on the etiology and severity of gastritis, which depends a history Helicobacter pylori infection secretory capacity stomach. Type A gastritis is associated with reverse atrophy corpus type B progressive extending from antrum to corpus. Diffuse or spotty redness in together high serum pepsinogen (PG) II levels low PG I/II ratio are observed patients H. when stomach intact. Diffuse-type may develop near folds, rare site atrophy. Low I intestinal metaplasia chronic previous infections. This clinical scenario predisposes intestinal-type cancer, originates atrophic metaplastic mucosa. Conversely, without infection. Serum acute pylori-negative including drug-induced but significantly autoimmune gastritis. Gastric neuroendocrine tumors those long-term acid suppressant use. Fasting gastrin both cases. In this review, types summarized along evaluation performed determine background