Related Experiment Videos
MR of leptomeningeal spinal and posterior fossa amyloid
S Horowitz1, C Thomas, G Gruener
1Department of Radiology, Loyola University Medical Center, Maywood, Ill 60153, USA.
Abstract:
We report an unusual cause of leptomeningeal MR enhancement, amyloid, along the surfaces of the spinal cord and brain stem and in the spinal subarachnoid space, with sacral intradural and epidural deposition. Type I familial amyloid polyneuropathy may cause amyloid deposition along the leptomeninges of the spinal cord and brain in addition to the visceral organs and the peripheral somatic and autonomic nerves.
Insights
Amyloid deposition can cause unusual leptomeningeal MR enhancement in the brain and spinal cord. This finding is associated with Type I familial amyloid polyneuropathy, affecting nerves and organs.
Area of Science:
- Neurology
- Radiology
- Pathology
Background:
- Leptomeningeal enhancement on Magnetic Resonance (MR) imaging typically indicates inflammation or neoplastic processes.
- Amyloidosis is a systemic disease characterized by extracellular deposition of misfolded proteins.
Observation:
- An unusual case of leptomeningeal MR enhancement was observed.
- Amyloid deposition was identified along the surfaces of the spinal cord and brain stem.
- Deposition was also noted in the spinal subarachnoid space and sacral epidural and intradural compartments.
Findings:
- The study identifies amyloid as an uncommon cause of leptomeningeal MR enhancement.
- Type I familial amyloid polyneuropathy is implicated as a potential cause for this specific pattern of deposition.
- This deposition pattern extends beyond typical visceral organ and peripheral nerve involvement.
Implications:
- This highlights the importance of considering amyloidosis in the differential diagnosis of unexplained leptomeningeal enhancement.
- Recognizing this pattern can aid in earlier diagnosis and management of familial amyloid polyneuropathy.
- Further research may elucidate the mechanisms of amyloid deposition in the central nervous system leptomeninges.