<prompt> A 65-year-old woman who is a known case of Hashimotos thyroiditis presented with symptoms of malabsorption. After evaluation, she was diagnosed to have atrophic gastritis. Which of the following is not feature of this patients condition?Anti-parietal cell antibodiesExcessive acid production in the stomachEndocrine cell hyperplasiaVitamin B12 deficiency  <response>: Autoimmune atrophic gastritis is characterized by: Antibodies to parietal cells and intrinsic factor that can be detected in serum and gastric secretions Reduced serum pepsinogen I concentration Endocrine cell hyperplasia Vitamin B12 deficiency Defective gastric acid secretion achlorhydria Pernicious anemia and autoimmune atrophic gastritis are often associated with other autoimmune diseases including Hashimoto thyroiditis, type 1 diabetes mellitus, Addison disease Clinical features are mainly related to vitamin B12 deficiency, including megaloblastic anemia, atrophic glossitis, epithelial megaloblastosis, malabsorptive diarrhea. 