Related Experiment Videos
[Polyneuropathy associated with neurofibromatosis]
1Service de Neurologie et Réseau NF Rhône-Alpin, Hôpital d'Instruction des Armées Desgenettes, Lyon, France. drouetalain@yahoo.com
Revue Neurologique
|April 1, 2005
Summary
Polyneuropathies are rare but severe in Neurofibromatosis 1 (NF1), often presenting as sensorimotor issues. Early detection and monitoring are crucial due to potential malignant nerve sheath tumors.
Area of Science:
- Neurology
- Genetics
Context:
- Neurofibromatosis type 1 (NF1) and type 2 (NF2) are genetic disorders.
- Polyneuropathies are a known complication, though less common in NF1 than NF2.
Purpose:
- To review the literature on polyneuropathies associated with NF1 and NF2.
- To highlight the clinical characteristics and potential severity of these neuropathies.
Summary:
- Symptomatic neuropathies in NF1, while rarer than in NF2, can lead to significant morbidity. They typically manifest as chronic, slowly progressive sensorimotor polyneuropathy in the lower limbs, often in young males with subcutaneous neurofibromas.
- NF1-associated polyneuropathies may show demyelinating or axonal features, with large multinodular nerve roots visible on MRI being characteristic. In contrast, NF2 neuropathies are primarily axonal.
- Malignant degeneration of peripheral nerve sheath tumors is a severe complication associated with NF1 neuropathies, increasing morbidity and mortality.
Impact:
- This review underscores the importance of careful monitoring for patients with NF1, particularly those with neuropathy, due to the risk of malignant transformation.
- Understanding the spectrum of neuropathies in NF1 and NF2 aids in diagnosis and management, potentially improving patient outcomes.