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This study is the first report to compare the clinical features of IgG4-related kidney disease (RKD), IgG4-related retroperitoneal fibrosis (RPF), and IgG4-related disease involving other organs in Korea. |
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IgG4-RKD and RPF were more frequent in older patients and were often diagnosed incidentally compared with involvement of other organs. |
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IgG4-RKD was associated with hypocomplementemia and eosinophilia, whereas RPF was associated with male sex, older age, and higher serum IgG4 levels. Both conditions showed frequent relapse, necessitating prolonged maintenance therapy. |
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This study aimed to identify factors associated with osteoporosis and osteopenia and to evaluate their impact on mortality in older patients initiating hemodialysis. |
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Among 710 patients aged ≥70 years, osteoporosis and osteopenia were present in 39.0% and 19.6%, respectively, and osteoporosis was associated with female sex, a history of fractures, and lack of phosphate binder use. |
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Osteoporosis at the start of hemodialysis was independently associated with increased mortality, highlighting the importance of bone health management in this population. |
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