A Rare Case of Acute Kidney Injury with Central Nervous System Manifestations

Pragna Potturi1, Jay Singh Arora1, Payal Gaggar1

  • 1Department of Nephrology, Nizam's Institute of Medical Sciences, Punjagutta, Hyderabad, Telangana, India.

Insights

Multiple myeloma (MM) is rare in young adults, but this case highlights unusual central nervous system (CNS) involvement. Early suspicion and treatment are crucial for better outcomes in these rare young myeloma patients.

Area of Science:

  • Hematology
  • Oncology
  • Neurology

Background:

  • Multiple myeloma (MM) predominantly affects older individuals, with less than 1% of cases occurring in patients under 35.
  • Central nervous system (CNS) involvement in MM is exceptionally rare, typically manifesting as leptomeningeal disease.

Observation:

  • A 35-year-old male presented with prolonged fever, slurred speech, nasal regurgitation, hearing loss, and decreased urine output.
  • Neurological examination revealed cranial nerve palsies (IX, X, XII), otitis media, and mastoiditis.
  • Renal biopsy confirmed cast nephropathy, indicative of myeloma kidney.

Findings:

  • The patient exhibited classic MM indicators: high kappa-lambda ratio (18), elevated β2 microglobulin (12 mg/L), 90% bone marrow plasma cells, and lytic bone lesions.
  • Treatment with dexamethasone, bortezomib, and thalidomide led to significant improvement in renal function and neurological deficits.

Implications:

  • This case underscores the importance of considering MM in young patients presenting with myeloma-like symptoms, even with atypical CNS manifestations.
  • Early diagnosis and prompt therapeutic intervention can lead to favorable outcomes in young adults with multiple myeloma and CNS involvement.

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