Related Experiment Videos
Systemic lambda light-chain deposition in a patient with myeloma.
British Medical Journal (Clinical Research Ed.)
|February 28, 1981
Summary
Systemic lambda light-chain deposition disease occurred in a myeloma patient, affecting multiple organs including the heart. This deposition likely caused fatal cardiac issues, suggesting a potential link to cyclophosphamide treatment.
Area of Science:
- Nephrology
- Hematology
- Cardiology
Background:
- Multiple myeloma is a plasma cell malignancy.
- Light chain deposition disease (LCDD) can affect various organs.
- Renal involvement is common in myeloma, termed myeloma kidney.
Observation:
- A 73-year-old man with myeloma presented with renal biopsy findings consistent with myeloma kidney.
- Post-mortem examination revealed systemic lambda light chain deposition in the kidneys, liver, spleen, and heart.
- Cardiac dysfunction and fatal arrhythmia were noted in the patient.
Findings:
- Systemic deposition of lambda light chains was confirmed post-mortem.
- The deposition was implicated as the cause of cardiac dysfunction and fatal arrhythmia.
- A possible structural alteration of light chains, potentially induced by cyclophosphamide, was hypothesized as the underlying mechanism.
Implications:
- This case highlights the potential for systemic light chain deposition in myeloma patients.
- It underscores the critical role of light chain conformation in organ damage.
- The findings suggest a need to consider drug-induced structural changes in light chains contributing to systemic deposition and organ dysfunction.