title: Iron medication-induced gastric mucosal injury.
abstract: Severe gastrointestinal erosion, ulcer, necrosis and strictures after an acute iron overdose are well described. However, gastric mucosal injury in patients receiving therapeutic iron has received only scant recognition despite its wide use. We report a case of iron medication-induced gastric mucosal injury in a 76-year-old male who presented with iron deficiency anemia and had been taking ferrous sulfate tablet for 4 years. Esophagogastroduodenoscopy (EGD) revealed a pale, villous appearing flat lesion along the lesser curvature of gastric body. Histopathologic examination of EGD biopsies of the flat lesion showed brown crystalline materials deposited in the lamina propria of gastric mucosa, which was accompanied with fibrosis, chronic inflammation, and foreign body reaction. The crystalline materials were covered and admixed with gastric epithelium. Prussian blue iron stain confirmed that the brown crystalline materials were iron. The iron and hemosiderin accumulation was also seen in cytoplasm of epithelial cells and lumen of fundic gastric glands. The recognition and reporting by pathologists of iron-induced changes in EGD biopsies will alert clinicians to this underrecognized but easily correctable complication by alternative forms of iron therapy, such as liquid preparation.
authors.affiliation: Department of Pathology, State University of New York, Downstate Medical Center, Brooklyn, NY 11203, USA. xuchen.zhang@downstate.edu
authors.forename: Xuchen
authors.initials: X
authors.lastname: Zhang
authors.forename: Jie
authors.initials: J
authors.lastname: Ouyang
authors.forename: Rosemary
authors.initials: R
authors.lastname: Wieczorek
authors.forename: Fidelina
authors.initials: F
authors.lastname: DeSoto
mesh_terms: D000368:Aged; D018798:Anemia, Iron-Deficiency / Q000150:complications / Q000188:drug therapy / Q000473:pathology; D004396:Coloring Agents / Q000378:metabolism; D016099:Endoscopy, Gastrointestinal; D005295:Ferrocyanides / Q000378:metabolism; D005296:Ferrous Compounds / Q000009:adverse effects*; D005753:Gastric Mucosa / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D006397:Hematinics / Q000009:adverse effects*; D006801:Humans; D007501:Iron / Q000378:metabolism; D008297:Male; D012806:Siderosis / Q000209:etiology / Q000378:metabolism / Q000473:pathology
chemical_list: D004396:Coloring Agents; D005295:Ferrocyanides; D005296:Ferrous Compounds; D006397:Hematinics; C020748:ferrous sulfate; D007501:Iron; C000170:ferric ferrocyanide