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[Polyneuropathy is an early finding in primary systemic amyloidosis]
F Romi1, C Vedeler, O B Tysnes
1Nevrologisk avdeling, Haukeland Sykehus, Bergen.
Summary
Primary systemic amyloidosis often presents as polyneuropathy, delaying diagnosis. Early detection and chemotherapy significantly improve survival for this rare condition.
Area of Science:
- Neurology
- Oncology
- Pathology
Background:
- Polyneuropathy is a common neurological disorder with diverse causes.
- Amyloidosis, a rare condition caused by protein fibril accumulation, can lead to polyneuropathy.
- Primary systemic amyloidosis stems from B-lymphocyte dyscrasia and may initially manifest as polyneuropathy.
Observation:
- This study presents three cases of primary systemic amyloidosis where polyneuropathy was the initial symptom.
- Patients experienced relentless progression, pain, and significant autonomic dysfunction.
Findings:
- Diagnosis of primary systemic amyloidosis is frequently delayed over two years post-polyneuropathy onset.
- Diagnostic methods include biopsies of rectum, fat tissue, bone marrow, or peripheral nerve.
Implications:
- Untreated patients have a median survival of approximately 18 months post-diagnosis.
- Chemotherapy can extend survival to around 38 months, highlighting the importance of timely treatment.