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Renal involvement in multiple myeloma: a 10-year study.
1Department of Nephrology, Postgraduate Institute of Medical Education and Research, Chandigarh, India. medinst@pgi.chd.nic.in
Renal Failure
|July 20, 2000
Summary
Renal involvement affects 27% of multiple myeloma patients, often presenting as renal failure. Early diagnosis and prompt treatment are crucial for improving outcomes in these cases.
Area of Science:
- Nephrology
- Oncology
- Internal Medicine
Background:
- Multiple myeloma frequently involves the kidneys, impacting patient prognosis.
- Understanding the spectrum and causes of renal complications is vital for timely diagnosis and management.
Purpose of the Study:
- To retrospectively examine the prevalence and characteristics of renal involvement in multiple myeloma patients.
- To identify factors precipitating renal failure and analyze renal histology in affected individuals.
Main Methods:
- Retrospective analysis of 204 multiple myeloma cases over 10 years.
- Review of clinical data, laboratory findings, and renal biopsy results.
Main Results:
- Renal involvement was observed in 27% of cases, predominantly presenting as renal failure (94.5%).
- Common causes of renal failure included dehydration, hypercalcemia, and nephrotoxic drugs. Myeloma cast nephropathy was the most frequent histological finding (over 60%).
- Renal involvement was associated with higher tumor burden, severe anemia, and light chain myeloma. Median survival was significantly lower in patients with renal involvement (4 months).
Conclusions:
- Renal impairment is a significant complication of multiple myeloma, often presenting insidiously.
- Unexplained renal failure in elderly patients warrants consideration of multiple myeloma, even without overt skeletal lesions.