(二) chronic gastritis ● Pathologic types 1 chronic superficial gastritis 2 chronic atrophic gastritis
（二） chronic gastritis ⚫ Pathologic types 1、 chronic superficial gastritis 2、 chronic atrophic gastritis
etiology o 1. chronic irritation o 2. reflux of the duodenal juice 3. autoimmune injury o 4. helicobacter pylori
etiology ⚫ 1.chronic irritation ⚫ 2.reflux of the duodenal juice ⚫ 3.autoimmune injury ⚫ 4.helicobacter pylori
chronic superficial gastritis o Mostly happened: 20-40% o Distributed diffusely, mainly in py lorus antrum
chronic superficial gastritis ⚫ Mostly happened：20-40% ⚫ Distributed diffusely，mainly in pylorus antrum
morpho⊥ogy 1.inflammatory changes limit to the upper 1/3 of the mucosa 2. a lymphocytic and plasma cell infiltrate in the upper mucosa 3. swelling degeneration and necrosis of the superficial mucosal epithelium
morphology ⒈inflammatory changes limit to the upper 1／3 of the mucosa； ⒉ a lymphocytic and plasma cell infiltrate in the upper mucosa； ⒊swelling 、degeneration and necrosis of the superficial mucosal epithelium
:家 蒸 · C ∴∷氵了;