The white plaque represents gastric mucosal metastatic calcification, which stains as dark deposits in the submucosa.
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Division of Gastroenterology and Hepatology, University of Kansas Medical Center, Kansas City, Kansas, USA.
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D015746:Abdominal Pain; D002114:Calcinosis / Q000473:pathology*; D005260:Female; D005753:Gastric Mucosa / Q000473:pathology*; D005921:Glomerulonephritis / Q000150:complications / Q000473:pathology; D006801:Humans; D007676:Kidney Failure, Chronic / Q000150:complications / Q000473:pathology; D008875:Middle Aged; D009362:Neoplasm Metastasis; D013274:Stomach Neoplasms / Q000473:pathology / Q000556:secondary*