Abstract

Background: Acute kidney injury (AKI) is a common complication in patients with leukemia and lymphoma. In this single-center non-interventional retrospective study from 2010 to 2022, we aimed to evaluate causes, clinical features, and pathology finding in patients with Hodgkin lymphoma (HL), non-Hodgkin lymphoma/leukemia (NHL/CLL), or lymphoplasmacytic lymphoma (LPL) and AKI. Methods: We identified 101 patients with HL, NHL/CLL, and LPL. We analyzed AKI incidence and various clinical, laboratory, and pathology parameters and outcomes. Results: About 46.5% of patients with HL, NHL/CLL, and LPL presented with AKI. The incidence of AKI was the highest in the CLL setting (65.0%), it was lower and almost equal (48.0% and 47.0%) in NHL and HL, respectively, and the lowest (14.2%) in LPL. Study group comprised of 47 patients, M/F 31/16, median age was 64.0 [52.0; 71.0] years, and the patients with HL were significantly younger ( p = 0.022). The median disease duration prior to the AKI presentation was 14 [5; 44] months. Pre-renal AKI was diagnosed in 48.9% of cases: tumor lysis syndrome (TLS), specific lymphoid infiltration (LI), and post-renal AKI presented in 12.7% each. Kidney biopsy in 49% of patients revealed LI in 39.1% of cases. Focal segmental glomerulosclerosis presented in 21.7% of cases, proliferative glomerulonephritis with monoclonal immunoglobulin deposits in 13.0%, AA amyloidosis, IgA nephropathy, and AA amyloidosis in 8.6% each. AKI recovered in 63.8% of patients and 59.5% of patients were alive and dialysis-free at last evaluation: 100% with HL versus 58.3%, 46.1%, and 0% with NHL, LL, and LPL, respectively ( p = 0.025); and 8.5% remained alive on dialysis. About 25.5% of patients died after discontinuation or without need for dialysis; and 6.3% died on dialysis. Conclusion: AKI in patients with leukemia and lymphoma is heterogeneous and most commonly caused by volume depletion. AKI recovery, though not complete, occurred in 63.8% of cases with 68% survival.

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