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[Kidney involvement in multiple myeloma].

Renal function, reserve capacities of the urinary tract and mechanism of development of chronic renal failure (CRF) in multiple myeloma (MM) were studied in 40 patients. Routine methods and ultrasound renal examinations were carried out. It is shown that the main causes of CRF in MM are hyperproteinemia and paraproteinemia. It is emphasized that sonography of the kidneys is a valuable and informative method allowing to determine renal size, evaluate the state of parenchyma, reveal disorders of the urodynamics of the upper urinary tract.