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Published on: July 19, 2019
Childhood chronic inflammatory demyelinating polyneuropathy with nonuniform pathologic features.
Xinghua Luan1, Riliang Zheng, Bin Chen
1Laboratory of Neuropathology, Department of Neurology, Peking University First Hospital, Beijing 100034, China.
Pediatric Neurology
|July 9, 2010
Summary
Childhood chronic inflammatory demyelinating polyneuropathy often shows nonuniform pathologic changes, unlike in adults. These findings aid in diagnosing pediatric cases, though clinical features remain similar across subtypes.
Area of Science:
- Neurology
- Pathology
- Pediatrics
Background:
- Nonuniform pathologic changes in chronic inflammatory demyelinating polyneuropathy (CIDP) were previously documented exclusively in adult human subjects.
- Understanding pediatric CIDP pathology is crucial for accurate diagnosis and management in children.
Purpose of the Study:
- To investigate the pathological features of chronic inflammatory demyelinating polyneuropathy in a pediatric cohort.
- To determine the prevalence and characteristics of nonuniform pathological changes in childhood CIDP.
- To compare pathological findings between uniform and nonuniform CIDP groups in children.
Main Methods:
- Analysis of pathological features from nerve biopsies of 12 pediatric patients (aged 2-17 years) diagnosed with CIDP.
- Classification of pathological patterns into uniform and nonuniform categories.
- Histological examination including assessment of myelinated fiber content, presence of onion bulbs, and inflammatory cell infiltration (macrophages, CD3-positive T cells).
Main Results:
- Nonuniform pathological features were observed in 5 of 12 (41.7%) pediatric patients.
- Two subtypes of nonuniform lesions were identified: varying myelinated fiber content between fascicles and onion bulb formation affecting variable fascicles.
- The nonuniform group showed a significantly greater number of CD3-positive T cells compared to the uniform group (P = 0.045).
Conclusions:
- Childhood chronic inflammatory demyelinating polyneuropathy frequently exhibits pathologically nonuniform features.
- These findings support the differential diagnosis of CIDP in pediatric patients.
- Clinical and electrophysiologic characteristics, along with treatment responses, were comparable between the uniform and nonuniform pathological groups in this cohort.
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