Won-Young Chey

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Apart from allergic mechanisms, a lack or mutation of metabolic enzymes may cause adverse drug reactions. Patch testing has rarely been useful in cutaneous adverse drug reactions (CADRs) induced by diphenylhydantoin (DPH). Genetic polymorphisms leading to altered metabolic processes of cytochrome P 450 (CYP) 2C9, a main metabolic enzyme for DPH, may be the(More)
BACKGROUND Zollinger-Ellison syndrome and idiopathic hypersecretion are gastrointestinal hypersecretory conditions requiring long-term maintenance. AIMS The safety and efficacy data for short-term (6-month) treatment of Zollinger-Ellison syndrome and idiopathic hypersecretion with oral pantoprazole were previously published. This study extends the initial(More)
A 44-year-old woman with hepatocellular carcinoma presented with intractable watery diarrhea and her condition was evaluated angiographically. Surgical ablation of the tumor resulted in complete resolution of the diarrhea. The tumor cells of the hepatocellular carcinoma were found to contain vasoactive intestinal polypeptide, gastrin, and prostaglandinlike(More)
Allergic reaction to insulin preparations seemed to have decreased since the introduction of contaminant-free, human preparations. The role of protamine sulfate in decreasing the prevalence of allergy is unclear. This study examines the causative components of insulin allergy along with the value of skin tests for diagnosis. Eleven patients with insulin(More)
A 26-yr-old woman with type 1 diabetes and severe symptomatic autonomic neuropathy was treated with the long-acting somatostatin analogue Sandostatin LAR for intractable diarrhea. Her diarrhea had previously been successfully managed with three daily injections of octreotide without adverse consequences. She was given a single dose of Sandostatin LAR and(More)
The value of skin tests in the diagnosis of adverse drug reactions (ADRs) has been limited. Lack of knowledge as to the nature of drug allergens has contributed to these limitations. Several reports have addressed the roles of metabolites in cutaneous ADRs and skin testing. We evaluated the role of a carbamazepine (CBZ) metabolite on the results obtained(More)
We report the case of a patient with central nervous system Whipple's disease who developed the syndrome of inappropriate antidiuretic hormone secretion (SIADH). The patient did not exhibit any gastrointestinal symptoms and initially was diagnosed based on neurologic findings and a duodenal biopsy that was positive for Tropheryma whippelii by the polymerase(More)
BACKGROUND Eradication of Helicobacter pylori in gastric mucosa-associated lymphoid tumor can result in lymphoma remission. We prospectively identified/treated infections in nonbulky, advanced stage indolent lymphoma (follicular; nonfollicular lymphoma) eligible for observation. MATERIALS AND METHODS Stool H. pylori, hepatitis C and Borrelia serologies,(More)
6701 Background: The antigen-drive association of gastric MALT lymphoma with H. pylori is well recognized. Successful antibiotic therapy can result in lymphoma remission, and with it, lymphoma prevention. We have sought to prospectively identify possible associated infections (candidates for antigen-drive) in patients with non-bulky, advanced stage indolent(More)
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