A 51-year-old man seen for high fever, thirst, polyposia, polyuria, and general malaise on January 25, 2002, was brought 6 days later to the emergency room with hematemesis. Laboratory data on admission was as follows : plasma glucose, 697 mg/d
l ; pH 7.12 ; HbA
1c, 6.0% ; and elevated serum pancreatic enzyme (elastase 1, 2,610 ng/d
l ; pancreatic phospholipase A2, 1,390 ng/d
l). Urinary C-peptide was not detected and anti-GAD antibody was negative. These findings suggested a diagnosis of fulminant type 1 diabetes, and insulin therapy was begun. Endoscopy showed wide-ranging mucosal erosion with hemorrhage in all surrounding tissues from the esophagus to the stomach and the duodenum, so intravenous hyperalimentation (IVH) and H
2 blocker were administered. Although abdominal symptoms appear at high frequency with fulminant type 1 diabetes, this case is unique in that it includes severe symptoms such as hemorrhage and acute wide-ranging mucosal erosion in the upper gastrointestinal tract.
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