ArticleCanadian journal of kidney health and disease2025
Extranodal Marginal Zone Lymphoma Presenting as Acute Kidney Injury due to Cast Nephropathy: A Case Report.
Article in Canadian journal of kidney health and disease, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Acute kidney injury (AKI) in non-Hodgkin lymphoma has diverse etiologies. We report a case in which AKI due to light chain cast nephropathy was the initial manifestation of extranodal marginal zone lymphoma, occurring without systemic symptoms. A 64-year-old male presented with severe AKI without other symptoms. His physical examination and renal ultrasound were unremarkable. Renal biopsy revealed light chain cast nephropathy, and a subsequent bone marrow biopsy confirmed marginal zone lymphoma. The patient received R-CHOP chemotherapy (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisolone) for a total of six cycles. The patient had a partial response to lymphoma. However, his renal function did not improve, and ultimately he progressed to end-stage kidney disease, requiring maintenance hemodialysis. This case highlights extranodal marginal zone lymphoma presenting as AKI, emphasizing its unique renal-limited manifestation in the absence of systemic symptoms and the critical role of renal biopsy in diagnosing unexplained AKI.
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