Abstract
Thrombocytopenia, anasarca, fever, reticulin fibrosis, organomegaly (TAFRO) syndrome is a unique clinicopathologic subtype of multicentric Castleman's disease that has recently been identified in Japan. However, little is known about its renal histological changes and the optimal treatment for TAFRO syndrome. An 80-year-old Japanese woman was admitted to our hospital for evaluation of severe anasarca and weight gain (10 kg in a month). She had polyneuropathy, monoclonal plasma cell proliferative disorder with positive kappa M-protein, a sclerotic bone lesion, elevation of vascular endothelial growth factor (VEGF), skin changes, and extravascular volume overload, which fulfilled the diagnostic criteria for POEMS (polyneuropathy, organomegaly, endocrinopathy, and monoclonal protein, skin changes) syndrome. However, kappa-type M-protein and thrombocytopenia with positivity of platelet-associated immunoglobulin G antibody were unusual, and fitted the diagnostic criteria for TAFRO syndrome. Renal biopsy showed diffuse endocapillary proliferative glomerulonephritis with endothelial swelling and the infiltration of monocytes and neutrophils without specific immunoglobulin deposits. Her systemic symptoms were refractory to initial trea...Continue Reading
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