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[Beta 2-microglobulin amyloidosis].

K Mazanec1, J McClure, C J Bartley

  • 1II. Patologicko-anmatomický ústav LF MU, Brno.

Ceskoslovenska Patologie
|March 1, 1992
PubMed
Summary
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Systemic amyloidosis, a beta 2-microglobulin type, developed in a long-term hemodialysis patient. Extensive amyloid deposits were found in the heart, spine, and wrist, with less conspicuous deposits in multiple organs.

Area of Science:

  • Nephrology
  • Pathology
  • Rheumatology

Background:

  • Long-term hemodialysis is a known risk factor for developing systemic amyloidosis.
  • Beta 2-microglobulin amyloidosis is a complication associated with chronic kidney disease and dialysis.
  • Amyloid deposition can affect various organs, leading to diverse clinical manifestations.

Observation:

  • A 35-year-old male on hemodialysis for 15 years presented with systemic amyloidosis.
  • Immunohistochemistry confirmed the amyloid type as beta 2-microglobulin.
  • Extensive amyloid deposits were observed in the myocardium, intervertebral disc cartilage, and carpal tunnel ligament.

Findings:

  • Less conspicuous amyloid deposits were found in the blood vessels of the lungs, liver, suprarenal glands, and brain.

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  • Amyloid deposits were also noted in the stroma of the prostate gland, testicles, and kidneys.
  • These deposits were frequently associated with calcified foci.

    • Implications:

    • This case highlights the widespread organ involvement of beta 2-microglobulin amyloidosis in long-term dialysis patients.
    • Understanding the distribution of amyloid deposits is crucial for diagnosing and managing complications.
    • Further research may elucidate mechanisms to prevent or treat this condition.