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Meiling JB, Boon AJ, Niu Z, Howe BM, Hoskote SS, Spinner RJ, Klein CJ. Parsonage-Turner Syndrome and Hereditary Brachial Plexus Neuropathy. Mayo Clin Proc 2024; 99:124-140. [PMID: 38176820 DOI: 10.1016/j.mayocp.2023.06.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/10/2023] [Accepted: 06/23/2023] [Indexed: 01/06/2024]
Abstract
Parsonage-Turner syndrome and hereditary brachial plexus neuropathy (HBPN) present with indistinguishable attacks of rapid-onset severe shoulder and arm pain, disabling weakness, and early muscle atrophy. Their combined incidence ranges from 3 to 100 in 100,000 persons per year. Dominant mutations of SEPT9 are the only known mutations responsible for HBPN. Parsonage and Turner termed the disorder "brachial neuralgic amyotrophy," highlighting neuropathic pain and muscle atrophy. Modern electrodiagnostic and imaging testing assists the diagnosis in distinction from mimicking disorders. Shoulder and upper limb nerves outside the brachial plexus are commonly affected including the phrenic nerve where diaphragm ultrasound improves diagnosis. Magnetic resonance imaging can show multifocal T2 nerve and muscle hyperintensities with nerve hourglass swellings and constrictions identifiable also by ultrasound. An inflammatory immune component is suggested by nerve biopsies and associated infectious, immunization, trauma, surgery, and childbirth triggers. High-dose pulsed steroids assist initial pain control; however, weakness and subsequent pain are not clearly responsive to steroids and instead benefit from time, physical therapy, and non-narcotic pain medications. Recurrent attacks in HBPN are common and prophylactic steroids or intravenous immunoglobulin may reduce surgical- or childbirth-induced attacks. Rehabilitation focusing on restoring functional scapular mechanics, energy conservation, contracture prevention, and pain management are critical. Lifetime residual pain and weakness are rare with most making dramatic functional recovery. Tendon transfers can be used when recovery does not occur after 18 months. Early neurolysis and nerve grafts are controversial. This review provides an update including new diagnostic tools, new associations, and new interventions crossing multiple medical disciplines.
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Affiliation(s)
- James B Meiling
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA
| | - Andrea J Boon
- Department of Physical Medicine and Rehabilitation, Mayo Clinic, Rochester, MN, USA; Department of Neurology, Mayo Clinic, Rochester, MN, USA
| | - Zhiyv Niu
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | | | - Sumedh S Hoskote
- Department of Pulmonary Medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Christopher J Klein
- Department of Neurology, Mayo Clinic, Rochester, MN, USA; Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
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Hagemann C, Antoniadis G, Pham M, Bischoff C, Ghosh T, Grieser T, Naumann M, Holzapfel K. [Diagnostics and treatment of hourglass-like nerve constrictions and torsions in neuralgic amyotrophy]. DER NERVENARZT 2023; 94:1157-1165. [PMID: 37943327 DOI: 10.1007/s00115-023-01562-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/29/2023] [Indexed: 11/10/2023]
Abstract
Neuralgic amyotrophy is a disease of the peripheral nervous system characterized by severe neuropathic pain followed by peripheral paralysis. A distinction is made between a hereditary and an idiopathic form, which is assumed to have an autoimmunological origin. Conservative medicinal treatment mainly consists of nonsteroidal anti-inflammatory drugs (NSAID), opioids and glucocorticoids; however, despite treatment, symptoms in the form of pain or paralysis persist in over 50% of cases. Inflammation can lead to strictures and torsions of peripheral nerves, which can be visualized by imaging using nerve sonography or magnetic resonance (MR) neurography and confirmed intraoperatively during surgical exploration. Based on the currently available data, patients with strictures and torsions of peripheral nerves can benefit from neurosurgical treatment.
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Affiliation(s)
- Christian Hagemann
- Klinik für Neurologie und klinische Neurophysiologie, Universitätsklinikum Augsburg, Stenglinstr. 2, 86156, Augsburg, Deutschland.
| | - Gregor Antoniadis
- Sektion "Periphere Nervenchirurgie", Neurochirurgische Klinik der Universität Ulm am Bezirkskrankenhaus Günzburg, Günzburg, Deutschland
| | - Mirko Pham
- Diagnostische und interventionelle Neuroradiologie, Universitätsklinikum Würzburg, Würzburg, Deutschland
| | - Christian Bischoff
- Neurologische Gemeinschaftspraxis am Marienplatz, Burgstraße 7, 80331, München, Deutschland
| | - Tanupriya Ghosh
- Klinik für Neurologie und klinische Neurophysiologie, Universitätsklinikum Augsburg, Stenglinstr. 2, 86156, Augsburg, Deutschland
| | - Thomas Grieser
- Diagnostische und interventionelle Radiologie, Universitätsklinikum Augsburg, Augsburg, Deutschland
| | - Markus Naumann
- Klinik für Neurologie und klinische Neurophysiologie, Universitätsklinikum Augsburg, Stenglinstr. 2, 86156, Augsburg, Deutschland
| | - Korbinian Holzapfel
- Klinik für Neurologie und klinische Neurophysiologie, Universitätsklinikum Augsburg, Stenglinstr. 2, 86156, Augsburg, Deutschland
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3
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Tracy JA. Autoimmune Axonal Neuropathies. Continuum (Minneap Minn) 2023; 29:1378-1400. [PMID: 37851035 DOI: 10.1212/con.0000000000001344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
OBJECTIVE This article reviews autoimmune axonal neuropathies, their characteristic clinical features, disease and antibody associations, appropriate ancillary testing, treatment, and prognosis. LATEST DEVELOPMENTS In 2021, the American College of Rheumatology and the Vasculitis Foundation released new summary guidelines for the treatment of antineutrophil cytoplasmic autoantibody-associated vasculitides. In addition, novel autoantibodies have been recently identified; they are often paraneoplastic and associated with axonal neuropathies. ESSENTIAL POINTS Recognition of autoimmune axonal neuropathies is important because of the potential for effective treatment to either reverse deficits or slow the progression of disease. It is necessary to properly assess for associations with other systemic disorders (eg, systemic vasculitis, connective tissue disease, neoplasm) so that adequate treatment for both neurologic and non-neurologic aspects of the disease can be initiated.
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Ueno S, Tateishi T, Ueda M, Yorita A, Sakurada N, Moritaka T, Taniwaki T. Hereditary Neuralgic Amyotrophy with a Lesion Distal to the Brachial Plexus on Magnetic Resonance Imaging. Intern Med 2023; 62:2407-2411. [PMID: 37587058 PMCID: PMC10484777 DOI: 10.2169/internalmedicine.0771-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 11/20/2022] [Indexed: 08/18/2023] Open
Abstract
A 35-year-old woman first experienced left upper limb weakness at 17 years old, after which it repeatedly recurred and then remitted. She was diagnosed with carpal tunnel syndrome with median nerve hyperintensity by magnetic resonance imaging (MRI). Surgical treatment was ineffective. We suspected hereditary neuralgic amyotrophy because of enlargement distal to the brachial plexus on MRI and administered steroid therapy, after which the weakness improved. Genetic testing revealed a point mutation in SEPT9. Because lesions outside the brachial plexus can be seen in hereditary neuralgic amyotrophy, the diagnosis should be based on typical characteristics and the family history.
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Affiliation(s)
- Shuntaro Ueno
- Division of Respirology, Neurology and Rheumatology, Department of Medicine, Kurume University School of Medicine, Japan
| | - Takahisa Tateishi
- Division of Respirology, Neurology and Rheumatology, Department of Medicine, Kurume University School of Medicine, Japan
| | - Maki Ueda
- Department of Neurology, Takeoka Hospital, Japan
| | - Akiko Yorita
- Division of Respirology, Neurology and Rheumatology, Department of Medicine, Kurume University School of Medicine, Japan
| | - Naonori Sakurada
- Division of Respirology, Neurology and Rheumatology, Department of Medicine, Kurume University School of Medicine, Japan
| | - Taiga Moritaka
- Division of Respirology, Neurology and Rheumatology, Department of Medicine, Kurume University School of Medicine, Japan
| | - Takayuki Taniwaki
- Division of Respirology, Neurology and Rheumatology, Department of Medicine, Kurume University School of Medicine, Japan
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5
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[Peripheral neuropathies during systemic diseases: Part II (vasculitis)]. Rev Med Interne 2023; 44:174-180. [PMID: 36925342 DOI: 10.1016/j.revmed.2023.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/08/2023] [Indexed: 03/15/2023]
Abstract
Primary systemic vasculitides, mainly of the small and medium-sized vessels, are frequently associated with peripheral neuropathies. When the disease is already known, the appearance of a neuropathy should suggest a specific injury, especially when associated with other systemic manifestations. Conversely, when neuropathy is inaugural, close collaboration between neurologists and internists is necessary to reach a diagnosis. A standardized electro-clinical investigation specifying the topography, the evolution and the mechanism of the nerve damage enables the positive diagnosis of the neuropathy. Several elements orient the etiological diagnosis and allow to eliminate the main differential diagnosis: non systemic vasculitic neuropathy. The existence of associated systemic manifestations (glomerular or vascular nephropathy, interstitial lung disease, intra-alveolar hemorrhage, ENT involvement…), biological markers (ANCA, cryoglobulinemia, rheumatoid factor), and invasive examinations allowing histological analysis (neuromuscular biopsy) are all useful tools for.
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Cejas C, Pastor Rueda JM, Hernández Pinzón J, Stefanoff N, Barroso F. Neuralgic amyotrophy detected by magnetic resonance neurography: subclinical, bilateral, and multifocal brachial plexus involvement. Neurol Res 2023; 45:283-289. [PMID: 36281961 DOI: 10.1080/01616412.2022.2138038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
INTRODUCTION Neuralgic amyotrophy (NA) is a painful non-traumatic peripheral nervous system condition affecting the brachial plexus. Signal abnormalities in nerves and muscles have been detected in these patients using magnetic resonance neurography (MRN). METHODS Electronic medical records and MRN images obtained in a 3 T scanner, in 14 adult patients diagnosed with NA at our Neurological institution (Neuromuscular Disorders Section), between December 2015 and December 2019 were retrospectively reviewed. The study was first approved by our Institutional Ethics Committee. RESULTS Subclinical, multifocal, and bilateral nerve signal anomalies were recorded in the brachial plexus of these patients. We identified four different types of nerve constriction without entrapment, which we categorized as follows: incomplete focal (type I), complete focal or hourglass (type II), multifocal or string of pearls (type III) and segmental (type IV). CONCLUSIONS Given that MRN is an accurate diagnostic tool to detect nerve damage, we believe abnormal findings could improve early detection of NA patients.
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Affiliation(s)
- Claudia Cejas
- Radiology Department, Fleni, Buenos Aires, Argentina
| | - José M Pastor Rueda
- Neuromuscular Disorders Section, Neurology Department, Fleni, Buenos Aires, Argentina
| | | | | | - Fabio Barroso
- Neuromuscular Disorders Section, Neurology Department, Fleni, Buenos Aires, Argentina
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Gstoettner C, Mayer JA, Rassam S, Hruby LA, Salminger S, Sturma A, Aman M, Harhaus L, Platzgummer H, Aszmann OC. Neuralgic amyotrophy: a paradigm shift in diagnosis and treatment. J Neurol Neurosurg Psychiatry 2020; 91:879-888. [PMID: 32487526 DOI: 10.1136/jnnp-2020-323164] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 05/07/2020] [Accepted: 05/10/2020] [Indexed: 01/22/2023]
Abstract
Neuralgic amyotrophy (NA), also known as Parsonage-Turner syndrome, is characterised by sudden pain attacks, followed by patchy muscle paresis in the upper extremity. Recent reports have shown that incidence is much higher than previously assumed and that the majority of patients never achieve full recovery. Traditionally, the diagnosis was mainly based on clinical observations and treatment options were confined to application of corticosteroids and symptomatic management, without proven positive effects on long-term outcomes. These views, however, have been challenged in the last years. Improved imaging methods in MRI and high-resolution ultrasound have led to the identification of structural peripheral nerve pathologies in NA, most notably hourglass-like constrictions. These pathognomonic findings have paved the way for more accurate diagnosis through high-resolution imaging. Furthermore, surgery has shown to improve clinical outcomes in such cases, indicating the viability of peripheral nerve surgery as a valuable treatment option in NA. In this review, we present an update on the current knowledge on this disease, including pathophysiology and clinical presentation, moving on to diagnostic and treatment paradigms with a focus on recent radiological findings and surgical reports. Finally, we present a surgical treatment algorithm to support clinical decision making, with the aim to encourage translation into day-to-day practice.
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Affiliation(s)
- Clemens Gstoettner
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Johannes A Mayer
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Vienna, Austria.,Department for Hand, Plastic, Reconstructive and Burn Surgery, BG Trauma Center Tuebingen at the Eberhard Karls University Tuebingen, Tuebingen, Germany
| | - Stephanie Rassam
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Vienna, Austria.,Department of General, Visceral, Endocrine and Transplantation Surgery, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Laura A Hruby
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Vienna, Austria.,Department of Orthopaedics and Trauma Surgery, Medical University of Vienna, Vienna, Austria
| | - Stefan Salminger
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Vienna, Austria.,Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
| | - Agnes Sturma
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Vienna, Austria.,Department of Bioengineering, Imperial College London, London, UK
| | - Martin Aman
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Vienna, Austria.,Department of Hand, Plastic and Reconstructive Surgery, Burn Center-Hand and Plastic Surgery, University of Heidelberg, BG Trauma Center Ludwigshafen, Ludwigshafen, Germany
| | - Leila Harhaus
- Department of Hand, Plastic and Reconstructive Surgery, Burn Center-Hand and Plastic Surgery, University of Heidelberg, BG Trauma Center Ludwigshafen, Ludwigshafen, Germany
| | - Hannes Platzgummer
- Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria
| | - Oskar C Aszmann
- Clinical Laboratory for Bionic Extremity Reconstruction, Department of Surgery, Medical University of Vienna, Vienna, Austria .,Division of Plastic and Reconstructive Surgery, Department of Surgery, Medical University of Vienna, Vienna, Austria
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Update on classification, epidemiology, clinical phenotype and imaging of the nonsystemic vasculitic neuropathies. Curr Opin Neurol 2020; 32:684-695. [PMID: 31313704 DOI: 10.1097/wco.0000000000000727] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE OF REVIEW Single-organ vasculitis of the peripheral nervous system (PNS) is often designated nonsystemic vasculitic neuropathy (NSVN). Several variants or subtypes have been distinguished, including migratory sensory neuropathy, postsurgical inflammatory neuropathy, diabetic radiculoplexus neuropathies, skin-nerve vasculitides, and, arguably, neuralgic amyotrophy. NSVN often presents as nondiabetic lumbosacral radiculoplexus neuropathy (LRPN). This review updates classification, clinical features, epidemiology, and imaging of these disorders. RECENT FINDINGS A recent study showed the annual incidence of LRPN in Olmstead County, Minnesota to be 4.16/100 000:2.79/100 000 diabetic and 1.27/100 000 nondiabetic. This study was the first to determine the incidence or prevalence of any vasculitic neuropathy. In NSVN, ultrasonography shows multifocal enlargement of proximal and distal nerves. In neuralgic amyotrophy, MRI and ultrasound reveal multifocal enlargements and focal constrictions in nerves derived from the brachial plexus. Histopathology of these chronic lesions shows inflammation and rare vasculitis. Diffusion tensor imaging of tibial nerves in NSVN revealed decreased fractional anisotropy in one study. SUMMARY Single-organ PNS vasculitides are the most common inflammatory neuropathies. Neuralgic amyotrophy might result from PNS vasculitis, but further study is necessary. The usefulness of focal nerve enlargements or constrictions in understanding pathological mechanisms, directing biopsies, and monitoring disease activity in NSVN should be further investigated.
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Grosse GM, Bauer C, Kopp B, Schrader C, Osmanovic A. Identification of a rare SEPT9 variant in a family with autosomal dominant Charcot-Marie-Tooth disease. BMC MEDICAL GENETICS 2020; 21:45. [PMID: 32122354 PMCID: PMC7050135 DOI: 10.1186/s12881-020-0984-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 02/25/2020] [Indexed: 12/17/2022]
Abstract
Background Charcot-Marie-Tooth disease (CMT) is one of the most commonly inherited neurological disorders. A growing number of genes, involved in glial and neuronal functions, have been associated with different subtypes of CMT leading to improved diagnostics and understanding of pathophysiological mechanisms. However, some patients and families remain genetically unsolved. Methods We report on a German family including four affected members over three generations with a CMT phenotype accompanied by cognitive deficits, predominantly with regard to visual abilities and episodic memory. Results A comprehensive clinical characterization followed by a sequential diagnostic approach disclosed a heterozygous rare SEPT9 missense variant c.1406 T > C, p.(Val469Ala), that segregates with disease. SEPT9 has been linked to various intracellular functions, such as cytokinesis and membrane trafficking. Interestingly, SEPT9-mutations are known to cause hereditary neuralgic amyotrophy (HNA), a recurrent focal peripheral neuropathy. Conclusion We, for the first time, present a SEPT9 variant associated to a CMT phenotype and suggest SEPT9 as new sufficient candidate gene in CMT.
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Affiliation(s)
- Gerrit M Grosse
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
| | - Christine Bauer
- Center for Genomics and Transcriptomics (CeGaT GmbH), Tübingen, Germany
| | - Bruno Kopp
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Christoph Schrader
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
| | - Alma Osmanovic
- Department of Neurology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany
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Barghouthi T, Lemley R, Figurelle M, Bushnell C. Epidemiology of neurologic disease in pregnancy. HANDBOOK OF CLINICAL NEUROLOGY 2020; 171:119-141. [PMID: 32736746 DOI: 10.1016/b978-0-444-64239-4.00006-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Many neurologic diseases in women are influenced by the physiologic and hormonal changes of pregnancy, and pregnancy itself poses challenges in both treatment and evaluation of these conditions. Some diseases, such as epilepsy and multiple sclerosis, have a high enough prevalence in the young female population to support robust epidemiologic data while many other neurologic diseases, such as specific myopathies and muscular dystrophies, have a low prevalence, with data limited to case reports and small case series. This chapter features epidemiologic information regarding a breadth of neurologic conditions, including stroke, epilepsy, demyelinating disease, peripheral neuropathies, migraine, sleep-disordered breathing, and meningioma, in women in the preconception, pregnancy, and postpartum stages.
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Affiliation(s)
- Tamara Barghouthi
- Department of Neurology, Wake Forest Baptist Medical Center, Winston-Salem, NC, United States
| | - Regan Lemley
- Department of Neurology, Wake Forest Baptist Medical Center, Winston-Salem, NC, United States
| | - Morgan Figurelle
- Department of Neurology, Wake Forest Baptist Medical Center, Winston-Salem, NC, United States
| | - Cheryl Bushnell
- Department of Neurology, Wake Forest Baptist Medical Center, Winston-Salem, NC, United States.
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11
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Mustafa R, Klein CJ, Martinez-Thompson J, Johnson AC, Engelstad JK, Spinner RJ, Crum BA. Recurrent Brachial Neuritis Attacks in Presentation of B-Cell Lymphoma. Mayo Clin Proc Innov Qual Outcomes 2018; 2:382-386. [PMID: 30560241 PMCID: PMC6260480 DOI: 10.1016/j.mayocpiqo.2018.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 09/28/2018] [Accepted: 10/05/2018] [Indexed: 12/03/2022] Open
Abstract
We describe a 51-year-old woman who over 5 years had 9 painful monophasic attacks affecting the brachial plexus before a fascicular plexus biopsy diagnosed large B-cell lymphoma. The initial attacks were responsive to steroids with clinical resolution. At last attack, magnetic resonance imaging showed multifocal T2 hyperintensities and nodular gadolinium enhancement in the right brachial plexus not seen previously. Also seen were similar changes in the thoracic spinal cord, basal ganglia, cerebellum, and brainstem. Positron emission tomography revealed marked hypermetabolic activity of the plexus facilitating targeted fascicular brachial plexus biopsy, making the pathological diagnosis. Neurolymphomatosis affecting the peripheral nervous system typically presents with insidious painful progressive infiltration of nerves, roots, or plexi. Recurrent idiopathic brachial neuritis attacks (ie, Parsonage-Turner syndrome) in contrast most commonly are seen in persons with a family history and a discoverable genetic cause by SEPT9 mutations, which tested negative in this patient. This case illustrates how neurolymphomatosis, which represents a malignant transformation of B cells within peripheral nerves, can sometimes present with paraneoplastic immune-responsive neuritis mimicking Parsonage-Turner syndrome. Recurrence, an immune-refractory course or insidious progressive involvement of the nervous system, should raise suspicion of neurolymphomatosis.
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Affiliation(s)
- Rafid Mustafa
- Department of Neurology, Mayo Clinic College of Medicine & Science, Rochester, MN
| | - Christopher J Klein
- Department of Neurology, Mayo Clinic College of Medicine & Science, Rochester, MN
| | | | - Adam C Johnson
- Department of Radiology, Mayo Clinic College of Medicine & Science, Rochester, MN
| | - JaNean K Engelstad
- Department of Neurology, Mayo Clinic College of Medicine & Science, Rochester, MN
| | - Robert J Spinner
- Department of Neurologic Surgery, Orthopedics, and Anatomy, Mayo Clinic College of Medicine & Science, Rochester, MN
| | - Brian A Crum
- Department of Neurology, Mayo Clinic College of Medicine & Science, Rochester, MN
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12
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Ho TY, Chung CH, Shen YP, Chen LC, Chien WC, Wu YT. Herpes zoster increased risk of neuralgic amyotrophy: a retrospective, population-based matched cohort study. J Neurovirol 2018; 25:91-100. [PMID: 30397829 DOI: 10.1007/s13365-018-0687-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 10/04/2018] [Accepted: 10/19/2018] [Indexed: 11/30/2022]
Abstract
Although neuralgic amyotrophy (NA) has occasionally been reported to be associated with reactivated herpes zoster, their associated risk remains unknown. The aim of this study was to assess the risk of developing NA following preceding herpes zoster. The authors used the National Health Insurance Research Database of Taiwan to select 41,548 patients with newly diagnosed herpes zoster during the period 2000 to 2010 and randomly extracted 166,192 matched control subjects. All participants in the study and control groups were followed for 3 months after the diagnosis to identify those who developed NA. Cox proportional hazards regression analyses were performed to evaluate the subsequent risk of NA. Twenty-one subjects from the group with herpes zoster (0.05%) developed NA over the 3-month period and 46 from the group without herpes zoster (0.03%). The patients with herpes zoster had a higher risk of developing NA (adjusted hazard ratio = 1.408, 95% confidence interval = 1.013-2.319, P = 0.030). In the patients with herpes zoster, female sex, age ≥ 65, hepatitis E virus (HEV), and having had a recent infectious event including pneumonia and influenza were risk factors for developing NA (adjusted HR 2.746, 1.998, 2.735, 2.016, and 1.718, respectively, all P < 0.05). Patients with herpes zoster attack have a higher risk of developing NA over a 3-month period after diagnosis, especially those who are female, age ≥ 65, HEV, or have experienced a recent infectious event or pneumonia and influenza.
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Affiliation(s)
- Tsung-Yen Ho
- Department of Physical Medicine and Rehabilitation, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, No. 325, Sec. 2, Cheng-Kung Road, Neihu District, Taipei, Taiwan, Republic of China
| | - Chi-Hsiang Chung
- School of Public Health, National Defense Medical Center, Taipei, Taiwan.,Taiwanese Injury Prevention and Safety Promotion Association (TIPSPA), Taipei, Taiwan.,Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, 7115R, No.325, Section 2, Cheng-Kung Road, Neihu District, Taipei, Taiwan, Republic of China
| | - Yu-Ping Shen
- Department of Physical Medicine and Rehabilitation, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, No. 325, Sec. 2, Cheng-Kung Road, Neihu District, Taipei, Taiwan, Republic of China
| | - Liang-Cheng Chen
- Department of Physical Medicine and Rehabilitation, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, No. 325, Sec. 2, Cheng-Kung Road, Neihu District, Taipei, Taiwan, Republic of China
| | - Wu-Chien Chien
- School of Public Health, National Defense Medical Center, Taipei, Taiwan. .,Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center, 7115R, No.325, Section 2, Cheng-Kung Road, Neihu District, Taipei, Taiwan, Republic of China. .,Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan.
| | - Yung-Tsan Wu
- Department of Physical Medicine and Rehabilitation, Tri-Service General Hospital, School of Medicine, National Defense Medical Center, No. 325, Sec. 2, Cheng-Kung Road, Neihu District, Taipei, Taiwan, Republic of China.
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13
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Neubauer K, Boeckelmann D, Koehler U, Kracht J, Kirschner J, Pendziwiat M, Zieger B. Hereditary neuralgic amyotrophy in childhood caused by duplication within the SEPT9 gene: A family study. Cytoskeleton (Hoboken) 2018; 76:131-136. [PMID: 30019529 PMCID: PMC6585727 DOI: 10.1002/cm.21479] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/28/2018] [Accepted: 07/10/2018] [Indexed: 01/24/2023]
Abstract
Hereditary neuralgic amyotrophy (HNA) is an autosomal dominant disorder associated with episodic, recurrent, and painful neuropathies affecting the nerves of the brachial plexus. In this study, we report on a family of Lebanese descent with HNA onset in early childhood. The affected family members presented with platelet dysfunction. Platelet aggregation was reduced after stimulation with the agonists ADP and epinephrine in all affected family members. Flow cytometric analyses revealed impaired platelet δ‐secretion. The index patient and one brother suffered from kidney cysts. Molecular genetic analysis revealed a heterozygous duplication of exon 2 within the septin 9 (SEPT9) gene in all the affected family members. Such a young child with HNA (aged 2 years) caused by SEPT9 duplication has not been described so far.
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Affiliation(s)
- Katharina Neubauer
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Medical Center, Medical Faculty, University of Freiburg, Freiburg, Germany
| | - Doris Boeckelmann
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Medical Center, Medical Faculty, University of Freiburg, Freiburg, Germany
| | - Udo Koehler
- Department of Medical Genetics, MGZ - Medical Genetics Center, Munich, Germany
| | - Julia Kracht
- Division of General Pediatrics, Department of Pediatrics and Adolescent Medicine, University Medical Center, Medical Faculty, University of Freiburg, Freiburg, Germany
| | - Janbernd Kirschner
- Department of Neuropediatrics and Muscle Disorders, University Medical Center, Faculty of Medicine, University of Freiburg, Germany
| | - Manuela Pendziwiat
- Department of Neuropediatrics, Christian-Albrechts-University of Kiel and University Medical Center Schleswig-Holstein, Kiel, Germany
| | - Barbara Zieger
- Division of Pediatric Hematology and Oncology, Department of Pediatrics and Adolescent Medicine, University Medical Center, Medical Faculty, University of Freiburg, Freiburg, Germany
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Singh N, Ray S, Srivastava A. Clinical Mimickers of Amyotrophic Lateral Sclerosis-Conditions We Cannot Afford to Miss. Ann Indian Acad Neurol 2018; 21:173-178. [PMID: 30258257 PMCID: PMC6137639 DOI: 10.4103/aian.aian_491_17] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Giving a diagnosis of amyotrophic lateral sclerosis to a patient is akin to handing out a death certificate. However, not all patients presenting with the classical dysphagia, wasting, and weakness may have motor neuron diseases. In these cases, it is extremely important not to miss little cues which can suggest an alternative diagnosis and in many cases a lease of life in terms of a treatment option. In this review, we consider some clinical scenarios that can present with the same symptom complex as diseases involving motor neurons but have a different anatomical or etiopathological basis and in many cases even a therapeutic option.
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Affiliation(s)
- Nishita Singh
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Sucharita Ray
- Department of Neurology, Neurosciences Centre, All India Institute of Medical Sciences, New Delhi, India
| | - Achal Srivastava
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
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15
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Foster LA, Amato AA, Berkowitz AL. Clinical Reasoning: A 60-year-old man with arm weakness and numbness. Neurology 2018; 90:190-196. [DOI: 10.1212/wnl.0000000000004867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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16
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Khadilkar SV, Yadav RS, Patel BA. Brachial Plexopathy. Neuromuscul Disord 2018. [DOI: 10.1007/978-981-10-5361-0_31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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18
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Liew ZH, Lo YL. Intravenous Immunoglobulin in Treatment of Hereditary Neuropathy With Liability to Pressure Palsy. J Clin Neuromuscul Dis 2017; 18:160-161. [PMID: 28221308 DOI: 10.1097/cnd.0000000000000153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- Zhong Hong Liew
- *Department of Neurology, Singapore General Hospital, Singapore †Department of Neurology, National Neuroscience Institute, Singapore ‡Duke-NUS Graduate Medical School, Singapore
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Inflammatory Neuropathy of the Lumbosacral Plexus following Periacetabular Osteotomy. Case Rep Orthop 2016; 2016:3632654. [PMID: 26989541 PMCID: PMC4771872 DOI: 10.1155/2016/3632654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 01/26/2016] [Indexed: 11/18/2022] Open
Abstract
Introduction. During periacetabular osteotomy (PAO), the sciatic, femoral, and obturator nerves are at risk. Most frequently nerve lesions can be attributed to a mechanical cause; however, in the absence of a clear mechanical cause surgeons are faced with a diagnostic problem and in many cases no diagnosis will be established. We report a case of inflammatory neuropathy of the lumbosacral plexus following a PAO. Case Presentation. A 31-year-old female developed weakness of ankle and knee flexion and extension 6 months after a PAO. Electrophysiological studies revealed damage to the obturator, femoral, and sciatic nerve consistent with an inflammatory lumbosacral plexopathy. MRI of the lumbosacral plexus was normal. The patient was treated with multimodal pain therapy and prolonged physiotherapy; nevertheless, symptoms worsened over time. At 2-year follow-up, there were no signs of recovery. Discussion. Inflammatory neuropathy of the lumbosacral plexus is a potential cause of pain and weakness after ipsilateral orthopaedic procedures. It should be distinguished from more frequently encountered mechanical causes of postsurgical neuropathy based on clinical suspicion, electrophysiological studies, MRI, and nerve biopsy. It is important that the orthopaedic community is aware of this complication since there is some evidence that early recognition and initiation of immunosuppressive therapy can lead to improved clinical outcome.
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Van Eijk JJJ, Groothuis JT, Van Alfen N. Neuralgic amyotrophy: An update on diagnosis, pathophysiology, and treatment. Muscle Nerve 2016; 53:337-50. [PMID: 26662794 DOI: 10.1002/mus.25008] [Citation(s) in RCA: 160] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/05/2015] [Indexed: 12/21/2022]
Abstract
In this review we provide a current overview of the clinical features, pathophysiology, epidemiology, and diagnostic and therapeutic strategies in neuralgic amyotrophy (NA). The disorder has several phenotypic variations, with a classic form in 70% of the patients. It is not rare, with an incidence of 1 per 1,000 individuals, but it is still often missed. Recurrences are common, yet the proposed multifactorial etiology, which includes genetic, biomechanical, and immunologic factors, limits our capacity to predict or prevent them. NA is a clinical diagnosis, and ancillary studies serve to exclude infectious or malignant causes or to assess a differential diagnosis. If patients are seen early and are still in pain, a short trial of high-dose oral corticosteroids is advised, and adequate analgesia may require opioids and non-steroidal anti-inflammatory drugs. Persistent complaints are common, and a multidisciplinary rehabilitation approach focusing on scapular coordination, energy distribution strategies, and self-management is indicated.
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Affiliation(s)
- Jeroen J J Van Eijk
- Department of Neurology, Jeroen Bosch Hospital, 's-Hertogenbosch, The Netherlands.,Department of Neurology and Clinical Neurophysiology, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jan T Groothuis
- Department of Rehabilitation, Donders Centre for Neuroscience, Radboud University Medical Center, P.O. Box 9101, 6500, HB Nijmegen, The Netherlands
| | - Nens Van Alfen
- Department of Neurology and Clinical Neurophysiology, Donders Centre for Neuroscience, Radboud University Medical Center, Nijmegen, The Netherlands
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Abstract
Peripheral neuropathies have diverse acquired and inherited causes. The autoimmune neuropathies represent an important category where treatment is often available. There are overlapping signs and symptoms between autoimmune neuropathies and other forms. Making a diagnosis can be challenging and first assisted by electrophysiologic and sometimes pathologic sampling, with autoimmune biomarkers providing increased assistance. Here we provide a review of the autoimmune and inflammatory neuropathies, their available biomarkers, and approaches to treatment. Also discussed is new evidence to support a mechanism of autoimmune pain.
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22
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van Eijk JJJ, Madden RG, van der Eijk AA, Hunter JG, Reimerink JHJ, Bendall RP, Pas SD, Ellis V, van Alfen N, Beynon L, Southwell L, McLean B, Jacobs BC, van Engelen BGM, Dalton HR. Neuralgic amyotrophy and hepatitis E virus infection. Neurology 2014; 82:498-503. [PMID: 24401685 PMCID: PMC3937863 DOI: 10.1212/wnl.0000000000000112] [Citation(s) in RCA: 126] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE To determine whether there is an association between an acute preceding hepatitis E virus (HEV) infection and neuralgic amyotrophy (NA), and if so, whether patients with HEV-related NA differ from patients without an associated HEV infection. METHODS HEV testing was conducted in a retrospective cohort of 28 Cornish patients with NA (2011-2013) and a prospective cohort of 38 consecutive Dutch patients with NA (2004-2007). Acute-phase serum samples were analyzed for the presence of anti-HEV immunoglobulin (Ig) M and IgG and HEV RNA (quantitative real-time PCR). RESULTS Five cases (10.6%) of acute hepatitis E infection were identified in a total group of 47 patients with NA of whom serum samples were available. In 4 patients, HEV RNA was detected in serum samples taken at presentation. All patients with HEV-associated NA had clinical and electrophysiologic evidence of bilateral brachial plexus involvement. Anti-HEV IgM positivity was not related to age, sex, disease severity, disease course, or outcome. CONCLUSIONS Acute hepatitis E is found in 10% of patients with NA from the United Kingdom and the Netherlands. Further research is required to investigate the role of HEV in NA in other geographical locations and to determine pathophysiologic mechanisms.
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Affiliation(s)
- Jeroen J J van Eijk
- From the Department of Neurology (J.J.J.v.E., N.v.A., B.G.M.v.E.), Radboud University Nijmegen Medical Centre; Department of Neurology (J.J.J.v.E.), Jeroen Bosch Hospital, Nijmegen, the Netherlands; Cornwall Gastrointestinal Unit (R.G.M., J.G.H., L.B., L.S., H.R.D.), Clinical Microbiology (R.P.B., V.E.), and Department of Neurology (B.M.), Royal Cornwall Hospital Trust; European Centre for the Environment and Human Health (R.G.M., J.G.H., R.P.B., L.B., H.R.D.), University of Exeter Medical School, Truro, UK; Centre for Infectious Disease Control (J.H.J.R.), Division Virology, National Institute for Public Health and the Environment, Bilthoven; Departments of Viroscience (A.A.v.d.E., S.D.P.), Immunology (B.C.J.), and Neurology (B.C.J.), Erasmus Medical Centre, University Medical Center Rotterdam, the Netherlands
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Rattananan W, Thaisetthawatkul P, Dyck PJB. Postsurgical inflammatory neuropathy: a report of five cases. J Neurol Sci 2013; 337:137-40. [PMID: 24332011 DOI: 10.1016/j.jns.2013.11.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Revised: 11/19/2013] [Accepted: 11/20/2013] [Indexed: 10/25/2022]
Abstract
BACKGROUND Clinical and pathologic descriptions of postsurgical inflammatory neuropathy have been reported but this condition is still under recognized. METHODS We reviewed 5 cases of a biopsy-proven inflammatory neuropathy that occurred within 30 days after surgical procedures. These patients were seen at one center in a 2-year period. RESULTS All patients developed neuropathy symptoms with time delay between the surgery and the neuropathy onset. In all, the symptoms progressed up to the time of evaluation. Electrophysiological studies revealed mononeuropathy or asymmetrical polyneuropathy with active denervation. Nerve biopsies showed ischemic injury and perivascular inflammatory collections in all cases. All patients were treated with intravenous methylprednisolone and four of them showed clinical improvement. The non-responsive patient did not receive immunotherapy until 2 years after neuropathy onset. CONCLUSIONS The report illustrates that focal or asymmetrical neuropathy is typical of postsurgical inflammatory neuropathy and has a favorable outcome after intravenous corticosteroid treatment. The report underscores the importance for considering potentially treatable inflammatory neuropathies in the post-surgical setting.
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Affiliation(s)
- Watcharasarn Rattananan
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Pariwat Thaisetthawatkul
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, United States.
| | - P James B Dyck
- Department of Neurology, Mayo Clinic, Rochester, MN, United States
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Klein CJ, Duan X, Shy ME. Inherited neuropathies: clinical overview and update. Muscle Nerve 2013; 48:604-22. [PMID: 23801417 DOI: 10.1002/mus.23775] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2013] [Indexed: 11/06/2022]
Abstract
Inherited neuropathy is a group of common neurologic disorders with heterogeneous clinical presentations and genetic causes. Detailed neuromuscular evaluations, including nerve conduction studies, laboratory testing, and histopathologic examination, can assist in identification of the inherited component beyond family history. Genetic testing increasingly enables definitive diagnosis of specific inherited neuropathies. Diagnosis, however, is often complex, and neurologic disability may have both genetic and acquired components in individual patients. The decision of which genetic test to order or whether to order genetic tests is often complicated, and the strategies to maximize the value of testing are evolving. Apart from rare inherited metabolic neuropathies, treatment approaches remain largely supportive. We provide a clinical update of the various types of inherited neuropathies, their differential diagnoses, and distinguishing clinical features (where available). A framework is provided for clinical evaluations, including the inheritance assessment, electrophysiologic examinations, and specific genetic tests.
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Affiliation(s)
- Christopher J Klein
- Department of Neurology, Mayo Clinic, 200 First Street SW, Rochester, Minnesota, 55905, USA; Department of Medical Genetics, Mayo Clinic, Rochester, Minnesota, USA
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Khadilkar SV, Khade SS. Brachial plexopathy. Ann Indian Acad Neurol 2013; 16:12-8. [PMID: 23661957 PMCID: PMC3644772 DOI: 10.4103/0972-2327.107675] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2012] [Revised: 11/09/2012] [Accepted: 10/24/2012] [Indexed: 11/04/2022] Open
Abstract
Brachial plexus injury can occur as a result of trauma, inflammation or malignancies, and associated complications. The current topic is concerned with various forms of brachial plexopathy, its clinical features, pathophysiology, imaging findings, and management. Idiopathic brachial neuritis (IBN), often preceded with antecedent events such as infection, commonly present with abruptonset painful asymmetric upper limb weakness with associated wasting around the shoulder girdle and arm muscles. Idiopathic hypertrophic brachial neuritis, a rare condition, is usually painless to begin with, unlike IBN. Hereditary neuralgic amyotrophy is an autosomal-dominant disorder characterized by repeated episodes of paralysis and sensory disturbances in an affected limb, which is preceded by severe pain. While the frequency of the episodes tends to decrease with age, affected individuals suffer from residual deficits. Neurogenic thoracic outlet syndrome affects the lower trunk of the brachial plexus. It is diagnosed on the basis of electrophysiology and is amenable to surgical intervention. Cancer-related brachial plexopathy may occur secondary to metastatic infiltration or radiation therapy. Traumatic brachial plexus injury is commonly encountered in neurology, orthopedic, and plastic surgery set-ups. Trauma may be a direct blow or traction or stretch injury. The prognosis depends on the extent and site of injury as well as the surgical expertise.
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Affiliation(s)
- Satish V Khadilkar
- Department of Neurology, Grant Medical College and Sir J.J. Group of Hospitals, Mumbai, Maharashtra, India
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Massie R, Mauermann ML, Staff NP, Amrami KK, Mandrekar JN, Dyck PJ, Klein CJ, Dyck PJB. Diabetic cervical radiculoplexus neuropathy: a distinct syndrome expanding the spectrum of diabetic radiculoplexus neuropathies. Brain 2013; 135:3074-88. [PMID: 23065793 DOI: 10.1093/brain/aws244] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Diabetic lumbosacral radiculoplexus neuropathy is a subacute painful, asymmetrical lower limb neuropathy due to ischaemic injury and microvasculitis. The occurrence of a cervical diabetic radiculoplexus neuropathy has been postulated. Our objective was to characterize the clinical features and pathological alterations of diabetic cervical radiculoplexus neuropathy, to see if they are similar to diabetic lumbosacral radiculoplexus neuropathy and due to ischaemic injury and microvasculitis. We identified patients with diabetic cervical radiculoplexus neuropathy by review of the Mayo Clinic database from 1996 to 2008. We systematically reviewed the clinical features, laboratory studies, neurophysiological findings, neuroimaging and pathological features and compared the findings with a previously published diabetic lumbosacral radiculoplexus neuropathy cohort. Eighty-five patients (56 males, 67 with Type 2 diabetes mellitus) were identified. The median age was 62 years (range 32-83). The main presenting symptom was pain (53/85). At evaluation, weakness was the most common symptom (84/85), followed by pain (69/85) and numbness (56/85). Neuropathic deficits were moderate (median motor neuropathy impairment score 10.0 points) and improved at follow-up. Upper, middle and lower brachial plexus segments were involved equally and pan-plexopathy was not unusual (25/85). Over half of patients (44/85) had at least one additional body region affected (30 contralateral cervical, 20 lumbosacral and 16 thoracic) as is found in diabetic lumbosacral radiculoplexus neuropathy. Recurrent disease occurred in 18/85. Neurophysiology showed axonal neuropathy (80/80) with paraspinal denervation (21/65), and abnormal autonomic (23/24) and sensory testing (10/13). Cerebrospinal fluid protein was elevated (median 70 mg/dl). Magnetic resonance imaging showed brachial plexus abnormality in all (38/38). Nerve biopsies (11 upper and 11 lower limbs) showed ischaemic injury (axonal degeneration, multifocal fibre loss 15/22, focal perineurial thickening 16/22, injury neuroma 5/22) and increased inflammation (epineural perivascular inflammation 22/22, haemosiderin deposition 6/22, vessel wall inflammation 14/22 and microvasculitis 5/22). We therefore conclude that (i) diabetic cervical radiculoplexus neuropathy is a predominantly monophasic, upper limb diabetic neuropathy with pain followed by weakness and involves motor, sensory and autonomic fibres; (ii) the neuropathy begins focally and often evolves into a multifocal or bilateral condition; (iii) the pathology of diabetic cervical radiculoplexus neuropathy demonstrates ischaemic injury often from microvasculitis; and (iv) diabetic cervical radiculoplexus neuropathy shares many of the clinical and pathological features of diabetic lumbosacral radiculoplexus neuropathy, providing evidence that these conditions are best categorized together within the spectrum of diabetic radiculoplexus neuropathies.
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Affiliation(s)
- Rami Massie
- Department of Neurology, Hôpital du Sacré-Coeur de Montréal, Montréal, Qc, H4J 1C5, Canada
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Recurrent Vocal Fold Paralysis and Parsonage-Turner Syndrome. Case Rep Otolaryngol 2013; 2013:763201. [PMID: 24288639 PMCID: PMC3833319 DOI: 10.1155/2013/763201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 09/25/2013] [Indexed: 11/17/2022] Open
Abstract
Background. Parsonage-Turner syndrome, or neuralgic amyotrophy (NA), is an acute brachial plexus neuritis that typically presents with unilateral shoulder pain and amyotrophy but also can affect other peripheral nerves, including the recurrent laryngeal nerve. Idiopathic vocal fold paralysis (VFP) represents approximately 12% of the VFP cases and recurrence is extremely rare.Methods and Results. We report a man with isolated recurrent unilateral right VFP and a diagnosis of NA years before.Conclusions. We emphasize that shoulder pain and amyotrophy should be inquired in any patient suffering from inexplicable dysphonia, and Parsonage-Turner syndrome should be considered in the differential diagnosis of idiopathic VFP.
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Abstract
Vasculitis is a primary phenomenon in autoimmune diseases such as polyarteritis nodosa, Wegener's granulomatosis, Churg-Strauss syndrome, microscopic polyangiitis, and essential mixed cryoglobulinemia. As a secondary feature vasculitis may complicate, for example, connective tissue diseases, infections, malignancies, and diabetes. Vasculitic neuropathy is a consequence of destruction of the vessel wall and occlusion of the vessel lumen of small epineurial arteries. Sometimes patients present with nonsystemic vasculitic neuropathy, i.e., vasculitis limited to peripheral nerves and muscles with no evidence of further systemic involvement. Treatment with corticosteroids, sometimes in combination with other immunosuppressants, is required to control the inflammatory process and prevent further ischemic nerve damage.
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Affiliation(s)
- Alexander F J E Vrancken
- Department of Neurology, Rudolf Magnus Institute of Neuroscience, University Medical Centre, Utrecht, The Netherlands
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Klein CJ, Barbara DW, Sprung J, Dyck PJ, Weingarten TN. Surgical and postpartum hereditary brachial plexus attacks and prophylactic immunotherapy. Muscle Nerve 2012; 47:23-7. [PMID: 23042485 DOI: 10.1002/mus.23462] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/08/2012] [Indexed: 11/08/2022]
Abstract
INTRODUCTION Surgery and childbirth can trigger attacks of hereditary brachial plexus neuropathy (HBPN), and inflammation was suggested as a component of the pathogenesis. METHODS HBPN patients who underwent surgery or parturition from January 1, 1996 to December 31, 2009 were studied. RESULTS Twenty-five HBPN patients underwent 48 surgeries or parturitions. Seventeen patients (68%) had attacks, including 13 periprocedural and 7 postpartum by varied anesthesia types. Three patients who had 8 earlier combined attacks (after thyroidectomy, laminectomy, and Caesarean section) were given prophylactic immunosuppressive therapy (corticosteroids ± immunoglobulin). None suffered postoperative attacks, which is uncharacteristic of their prior experience. Five had perioperative attacks as their first HBPN manifestation. Median follow-up was 11 months (3-48 months). Attacks occurred in the operated limb (n = 6) or distant (n = 7) to surgical sites. All attacks interfered with daily living, with frequent incomplete recovery. Five patients had a SEPT9 mutation. CONCLUSIONS Corticosteroids may prevent parturition and surgical HBPN attacks in some patients. Diverse surgeries, anesthesia, and childbirth frequently trigger HBPN attacks.
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Affiliation(s)
- Christopher J Klein
- Department of Neurology, Division of Peripheral Nerve Diseases and Medical Genetics, Mayo Clinic Foundation, 200 First Street S.W., Rochester, Minnesota, USA.
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Abstract
Neuralgic amyotrophy--also known as Parsonage-Turner syndrome or brachial plexus neuritis--is a distinct and painful peripheral neuropathy that causes episodes of multifocal paresis and sensory loss in a brachial plexus distribution with concomitant involvement of other PNS structures (such as the lumbosacral plexus or phrenic nerve) in a large number of patients. The phenotype can be limited or extensive and the amount of disability experienced also varies between patients, but many are left with residual disabilities that affect their ability to work and their everyday life. Both idiopathic and hereditary forms exist. The latter form is genetically heterogeneous, but in 55% of affected families, neuralgic amyotrophy is associated with a point mutation or duplication in the SEPT9 gene on chromosome 17q25. The disease is thought to result from an underlying genetic predisposition, a susceptibility to mechanical injury of the brachial plexus (possibly representing disturbance of the epineurial blood-nerve barrier), and an immune or autoimmune trigger for the attacks. The precise pathophysiological mechanisms are still unclear; treatment is empirical, and preventive measures are not yet available. This Review provides an overview of the current clinical and pathophysiological concepts and research topics in neuralgic amyotrophy.
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Staff NP, Engelstad J, Klein CJ, Amrami KK, Spinner RJ, Dyck PJ, Warner MA, Warner ME, Dyck PJB. Post-surgical inflammatory neuropathy. Brain 2010; 133:2866-80. [DOI: 10.1093/brain/awq252] [Citation(s) in RCA: 157] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cosson A, Mathieu A, Sevrin P, Nollet S, Tatu L. [Severe form of hereditary neuralgic amyotrophy without SEPT9 gene mutation]. Rev Neurol (Paris) 2010; 167:169-72. [PMID: 20800251 DOI: 10.1016/j.neurol.2010.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 04/20/2010] [Accepted: 07/07/2010] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Hereditary neuralgic amyotrophy (HNA) is a rare condition characterized by recurrent episodes of painful paralysis preferentially affecting the brachial plexus. It is often linked to a mutation in the SEPT9 gene. CASE REPORT A 69-year-old female patient experienced a dozen episodes of severe neurological deficit mainly affecting the brachial plexus and the phrenic and recurrent nerves. The diagnosis of HNA without SEPT9 gene mutation was retained. DISCUSSION HNA can have significant sequelae. A genetic heterogeneity exists and mutations in the SEPT9 gene may not be found. Immunomodulatory and corticosteroid treatments have sometimes proved to be effective.
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Affiliation(s)
- A Cosson
- Service d'explorations et pathologies neuromusculaires, hôpital Jean-Minjoz, CHU, 3, boulevard Fleming, 25030 Besançon cedex, France.
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McMillan HJ, Yang M, Jones HR. Brachial plexopathy and nonaccidental injury: role of the neurologist. J Child Neurol 2010; 25:620-2. [PMID: 20413805 DOI: 10.1177/0883073809359808] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Child neurologists must remain vigilant to the possibility of nonaccidental injury. Just as clinicians have become accustomed to considering potential abuse or neglect in children presenting with a head injury or skeletal trauma, physical abuse must also be considered when children present with lesions at other sites of the neuraxis, as illustrated by this child's brachial plexopathy. Key elements from the history can assist clinicians in differentiating accidental events from nonaccidental injuries secondary to abuse or neglect. We report a toddler who presented with a recurrent brachial plexopathy due to nonaccidental injury. Her parents initially denied the occurrence of any significant trauma. Furthermore, her diagnosis was complicated by the identification of concomitant, but unrelated lead toxicity. In this case, the vague and inconsistent parental history, plexopathy recurrence, and identification of a fracture all heightened suspicion of child abuse.
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Affiliation(s)
- Hugh J McMillan
- Department of Neurology, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA
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Abstract
Neuralgic amyotrophy is a painful, episodic peripheral nerve disorder localized to the brachial plexus. Sensory symptoms occur in 80% of the patients. We assessed the frequency of abnormalities in sensory nerve conduction studies of the lateral and medial antebrachial cutaneous, radial sensory, median sensory, and ulnar sensory nerves in 112 patients. Sensory nerve conduction studies showed abnormalities in <20% of nerves, even when the nerve was clinically affected. The lateral and medial antebrachial cutaneous nerves were most often abnormal, in 15% and 17% of nerves. No correlation with the presence or localization of clinical deficits was found. Brachial plexus sensory nerve conduction studies seem to be of little diagnostic value in neuralgic amyotrophy. Our findings also indicate that some sensory lesions may be in the nerve roots instead of the plexus. An examination of normal sensory nerve conduction studies does not preclude neuralgic amyotrophy as a diagnosis.
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van Alfen N, van Engelen BGM, Hughes RAC. Treatment for idiopathic and hereditary neuralgic amyotrophy (brachial neuritis). Cochrane Database Syst Rev 2009; 2009:CD006976. [PMID: 19588414 PMCID: PMC7212001 DOI: 10.1002/14651858.cd006976.pub2] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
BACKGROUND Neuralgic amyotrophy (also know as Parsonage-Turner syndrome or brachial plexus neuritis) is a distinct peripheral nervous system disorder characterised by episodes (attacks) of extreme neuropathic pain and rapid multifocal weakness and atrophy in the upper limbs. Neuralgic amyotrophy has both an idiopathic and hereditary form, with similar clinical symptoms but generally an earlier age of onset and more episodes in the hereditary form. The current hypothesis is that the episodes are caused by an immune-mediated response to the brachial plexus. Recovery is slow, in months to years, and many patients are left with residual pain and decreased exercise tolerance of the affected limb(s). Anecdotal evidence suggests that corticosteroids may relieve pain or help improve functional recovery. OBJECTIVES The objective was to provide a systematic review of all randomised clinical trials of treatment in neuralgic amyotrophy. SEARCH STRATEGY We searched the Cochrane Neuromuscular Disease Group Trials Register (April 2 2009), MEDLINE (January 1966 to April 2 2009), EMBASE (January 1980 to April 2 2009), CINAHL (January 1982 to April 2 2009), and LILACS (January 1982 to April 2 2009) for randomised controlled trials of treatment for neuralgic amyotrophy. SELECTION CRITERIA Any randomised or quasi-randomised trial of any intervention for neuralgic amyotrophy would be included in the review. DATA COLLECTION AND ANALYSIS Two review authors extracted the data (RH, NvA) and two authors assessed study quality and performed data extraction independently (NvA, BvE). MAIN RESULTS No randomised or quasi-randomised trials were identified. In 30 articles anecdotal evidence was found on treatment for neuralgic amyotrophy. Only three of these articles contained more than 10 treated cases, with one providing sufficient details to calculate the primary and secondary outcome measures for this review. AUTHORS' CONCLUSIONS At this moment there is no evidence from randomised trials on any form of treatment for neuralgic amyotrophy. Evidence from one open-label retrospective series suggests that oral prednisone given in the first month after onset can shorten the duration of the initial pain and leads to earlier recovery in some patients. Randomised clinical trials are needed to establish the efficacy of treatment with corticosteroids or other immune-modulating therapies.
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Affiliation(s)
- Nens van Alfen
- Radboud University Nijmegen Medical CenterDepartment of Neurology and Clinical NeurophysiologyPO Box 9101c/o 920 KNFNijmegenNetherlands6500 HB
| | - Baziel GM van Engelen
- Radboud University Nijmegen Medical CenterDepartment of NeurologyPO Box 9101NijmegenNetherlands6500 HB
| | - Richard AC Hughes
- National Hospital for Neurology and NeurosurgeryMRC Centre for Neuromuscular DiseasePO Box 114Queen SquareLondonUKWC1N 3BG
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Klein CJ, Wu Y, Cunningham JM, Windebank AJ, Dyck PJB, Friedenberg SM, Klein DM, Dyck PJ. SEPT9 mutations and a conserved 17q25 sequence in sporadic and hereditary brachial plexus neuropathy. ACTA ACUST UNITED AC 2009; 66:238-43. [PMID: 19204161 DOI: 10.1001/archneurol.2008.585] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND The clinical characteristics of sporadic brachial plexus neuropathy (S-BPN) and hereditary brachial plexus neuropathy (H-BPN) are similar. During attacks, inflammation of the brachial plexus nerves has been identified in both conditions. SEPT9 mutations (Arg88Trp, Ser93Phe, 5'UTR c.-131G>C) occur in some families with H-BPN. These mutations were not found in North American kindreds with H-BPN with a conserved 500-kilobase sequence of DNA at the 17q25 chromosomal region (where SEPT9 localizes) where a founder mutation has been suggested. OBJECTIVE To study the 17q25 sequence and SEPT9 in S-BPN (56 individuals) and H-BPN (13 kindreds). METHODS Allele analysis at 17q25, SEPT9 DNA sequencing, and messenger RNA analysis from lymphoblast cultures were performed. RESULTS A conserved 17q25 sequence was found in 5 of 13 kindreds with H-BPN and 1 individual with S-BPN. This conserved sequence was not found in the family with a SEPT9 mutation (Arg88Trp) or in 182 control subjects. SEPT9 messenger RNA expression levels did not differ between forms of H-BPN and control subjects. No known mutations of SEPT9 were found in S-BPN. CONCLUSIONS Rarely, individuals with S-BPN may have the same conserved 17q25 sequence found in many North American kindreds with H-BPN. Individuals with BPN with this conserved sequence do not seem to have SEPT9 mutations or alterations of messenger RNA expression levels in lymphoblast cultures and are predicted to have the most common genetic cause in North America by a founder-effect mutation.
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Affiliation(s)
- Christopher J Klein
- Peripheral Neuropathy Research Laboratory, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
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Landsverk ML, Ruzzo EK, Mefford HC, Buysse K, Buchan JG, Eichler EE, Petty EM, Peterson EA, Knutzen DM, Barnett K, Farlow MR, Caress J, Parry GJ, Quan D, Gardner KL, Hong M, Simmons Z, Bird TD, Chance PF, Hannibal MC. Duplication within the SEPT9 gene associated with a founder effect in North American families with hereditary neuralgic amyotrophy. Hum Mol Genet 2009; 18:1200-8. [PMID: 19139049 DOI: 10.1093/hmg/ddp014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Hereditary neuralgic amyotrophy (HNA) is an autosomal dominant disorder associated with recurrent episodes of focal neuropathy primarily affecting the brachial plexus. Point mutations in the SEPT9 gene have been previously identified as the molecular basis of HNA in some pedigrees. However in many families, including those from North America demonstrating a genetic founder haplotype, no sequence mutations have been detected. We report an intragenic 38 Kb SEPT9 duplication that is linked to HNA in 12 North American families that share the common founder haplotype. Analysis of the breakpoints showed that the duplication is identical in all pedigrees, and molecular analysis revealed that the duplication includes the 645 bp exon in which previous HNA mutations were found. The SEPT9 transcript variants that span this duplication contain two in-frame repeats of this exon, and immunoblotting demonstrates larger molecular weight SEPT9 protein isoforms. This exon also encodes for a majority of the SEPT9 N-terminal proline rich region suggesting that this region plays a role in the pathogenesis of HNA.
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Affiliation(s)
- Megan L Landsverk
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA 98195, USA
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Legré V, Azulay J, Serratrice J. Syndrome de Parsonage et Turner (névralgie amyotrophiante). ACTA ACUST UNITED AC 2009. [DOI: 10.1016/s0246-0521(09)48234-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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van Alfen N. The neuralgic amyotrophy consultation. J Neurol 2007; 254:695-704. [PMID: 17446996 PMCID: PMC2780663 DOI: 10.1007/s00415-006-0246-4] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2006] [Revised: 03/31/2006] [Accepted: 04/12/2006] [Indexed: 11/02/2022]
Abstract
Neuralgic amyotrophy is a distinct clinical syndrome with acute severe pain and patchy paresis in the shoulder and arm region. The clinical phenotype was recently found to be more comprehensive and the long-term prognosis less optimistic than usually assumed for many patients. The disorder can be idiopathic or hereditary in an autosomal dominant fashion, with only few phenotypical variations between the two. This article provides a practical overview of current knowledge on the clinical presentation, diagnosis, pathogenesis and the treatment of pain and complications.
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Affiliation(s)
- Nens van Alfen
- Neurologist, clinical neurophysiologist, Neuromuscular Centre Nijmegen, Dept. of Neurology and Clinical Neurophysiology, c/o 920 KNF, Radboud University Nijmegen, Medical Centre, PO Box 9101, 6500 HB, Nijmegen, The Netherlands.
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Chance PF. Inherited focal, episodic neuropathies: hereditary neuropathy with liability to pressure palsies and hereditary neuralgic amyotrophy. Neuromolecular Med 2007; 8:159-74. [PMID: 16775374 DOI: 10.1385/nmm:8:1:159] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2005] [Revised: 12/22/2005] [Accepted: 12/30/2005] [Indexed: 12/16/2022]
Abstract
Hereditary neuropathy with liability to pressure palsies (HNPP; also called tomaculous neuropathy) is an autosomal-dominant disorder that produces a painless episodic, recurrent, focal demyelinating neuropathy. HNPP generally develops during adolescence, and may cause attacks of numbness, muscular weakness, and atrophy. Peroneal palsies, carpal tunnel syndrome, and other entrapment neuropathies may be frequent manifestations of HNPP. Motor and sensory nerve conduction velocities may be reduced in clinically affected patients, as well as in asymptomatic gene carriers. The histopathological changes observed in peripheral nerves of HNPP patients include segmental demyelination and tomaculous or "sausage-like" formations. Mild overlap of clinical features with Charcot-Marie-Tooth (CMT) disease type 1 (CMT1) may lead patients with HNPP to be misdiagnosed as having CMT1. HNPP and CMT1 are both demyelinating neuropathies, however, their clinical, pathological, and electrophysiological features are quite distinct. HNPP is most frequently associated with a 1.4-Mb pair deletion on chromosome 17p12. A duplication of the identical region leads to CMT1A. Both HNPP and CMT1A result from a dosage effect of the PMP22 gene, which is contained within the deleted/duplicated region. This is reflected in reduced mRNA and protein levels in sural nerve biopsy samples from HNPP patients. Treatment for HNPP consists of preventative and symptom-easing measures. Hereditary neuralgic amyotrophy (HNA; also called familial brachial plexus neuropathy) is an autosomal-dominant disorder causing episodes of paralysis and muscle weakness initiated by severe pain. Individuals with HNA may suffer repeated episodes of intense pain, paralysis, and sensory disturbances in an affected limb. The onset of HNA is at birth or later in childhood with prognosis for recovery usually favorable; however, persons with HNA may have permanent residual neurological dysfunction following attack(s). Episodes are often triggered by infections, immunizations, the puerperium, and stress. Electrophysiological studies show normal or mildly prolonged motor nerve conduction velocities distal to the affected brachial plexus. Pathological studies have found axonal degeneration in nerves examined distal to the plexus abnormality. In some HNA pedigrees there are characteristic facial features, including hypotelorism. The prognosis for recovery of normal function of affected limbs in HNA is good, although recurrent episodes may cause residual deficits. HNA is genetically linked to chromosome 17q25, where mutations in the septin-9 (SEPT9) gene have been found.
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Affiliation(s)
- Phillip F Chance
- Division of Genetics and Developmental Medicine, Children's Hospital and Regional Medical Center, Department of Pediatrics, University of Washington School of Medicine, Box 356320, Room RR247, Seattle, Washington 98195, USA.
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Abstract
The classification of vasculitis and the clinical features of vasculitic neuropathy are reviewed. Vasculitic neuropathy usually presents with painful mononeuropathies or an asymmetric polyneuropathy of acute or subacute onset. Neurologists should categorize vasculitic neuropathy in terms of clinical features (eg, systemic or non systemic) and in terms of histopathology (eg, nerve large arteriole vasculitis or nerve microvasculitis). Systemic vasculitis should be classified further into one of the primary and secondary forms. Steroids and cytotoxic agents have been the mainstay of therapy for most forms of vasculitic neuropathy. Dosing, potential side effects, and management recommendations of conventional therapies are provided.
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Affiliation(s)
- Ted M Burns
- Department of Neurology, University of Virginia, Charlottesville, VA 22908, USA
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Abstract
Neuropathy is one of the most common referrals to neurologic clinics. Patients often undergo extensive testing for acquired etiologies; inherited causes are common. Increasingly, genetic causes are becoming known and commercial testing available. The rate of recent discovery has been rapid and relates to the extent of single gene disorders of nerve, the ease of peripheral nervous system functional examination, and readily accessible pathologic tissue. Foremost in the rate of recent discoveries is the work and tools of the human genome project. the rapidity of the ongoing discovery requires clinicians to be familiar with molecular biologic discoveries and consider wisely which testing should be performed.
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Affiliation(s)
- Christopher J Klein
- Department of Neurology, Division of Peripheral Nerve Diseases, Mayo Clinic, Rochester, MN, USA.
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Castillo M. Imaging the anatomy of the brachial plexus: review and self-assessment module. AJR Am J Roentgenol 2006; 185:S196-204. [PMID: 16304040 DOI: 10.2214/ajr.05.1014] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
OBJECTIVE The educational objectives of this continuing medical education activity are to describe the normal anatomy of the brachial plexus, to name the most common symptoms associated with a brachial plexopathy, to describe the most common imaging findings resulting from trauma to the brachial plexus, to describe the imaging manifestations of common neoplasias affecting the brachial plexus, and to also describe the imaging findings and symptoms related to irradiation-induced brachial plexopathies. CONCLUSION In this article, I have illustrated and described the normal anatomy of the brachial plexus; the most common symptoms related to brachial plexopathy; and imaging findings related to trauma, tumors, and irradiation affecting the brachial plexus.
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Affiliation(s)
- Mauricio Castillo
- Department of Radiology, University of North Carolina School of Medicine, Chapel Hill, NC 27599-7510, USA.
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Abstract
Many neuromuscular conditions occur more frequently during pregnancy and include carpal tunnel syndrome, Bell's palsy, lumbosacral radiculopathy, meralgia paresthetica, intercostal neuralgia, and other compression neuropathies. Preexisting or coincident neuromuscular diseases, including demyelinating polyneuropathies, inflammatory muscle disease, myasthenia gravis, and inherited nerve and muscle disease present specific problems during pregnancy. We review management of neuromuscular disorders during pregnancy, labor, delivery, and the early postpartum period.
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Abstract
Histopathologic evaluation of nerve biopsy specimens provides important diagnostic information in some patients with peripheral neuropathy. The role of nerve biopsy is more restricted than that of muscle biopsy. Nerve biopsy is utilized mainly for diagnosis of vasculitis and infiltrative neuropathies. It is also utilized in diagnosis of atypical inflammatory demyelinating neuropathies in which the clinical, electrodiagnostic, and laboratory features are inconclusive. In addition, the study of nerve histopathology can also enhance our understanding of disease pathogenesis.
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Affiliation(s)
- David Lacomis
- University of Pittsburgh Medical Center, UPMC Presbyterian, 200 Lothrop Street, F878, Pittsburgh, PA 15213, USA.
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Martini R, Toyka KV. Immune-mediated components of hereditary demyelinating neuropathies: lessons from animal models and patients. Lancet Neurol 2004; 3:457-65. [PMID: 15261606 DOI: 10.1016/s1474-4422(04)00822-1] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Most demyelinating forms of Charcot-Marie-Tooth type 1 (CMT1) neuropathy are slowly progressive and do not respond to anti-inflammatory treatment. In nerve biopsy samples, overt lymphocytic infiltration is absent, but pathological features typical of macrophage-related demyelination have been reported. In mouse models of CMT1, demyelination was substantially reduced when the mutants were backcrossed into an immunodeficient genetic background. A few individual patients with CMT1 respond to anti-inflammatory treatment; however, unlike most patients with CMT1, these patients show accelerated worsening of symptoms, inflammatory infiltrates in nerve biopsies, and clinical features resembling chronic inflammatory demyelinating polyneuropathy as well as CMT1. We conclude that in patients with typical CMT1 and in animal models, a cryptic and mild inflammatory process not responsive to standard anti-inflammatory treatment fosters genetically mediated demyelination.
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Affiliation(s)
- Rudolf Martini
- Department of Neurology, University of Wuerzburg, Germany.
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Affiliation(s)
- Christopher J Klein
- Department of Neurology, Mayo Clinic, Guggenheim 811, 200 First Street, Rochester, MN 55905, USA.
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Hünermund G, Schirmacher A, Ringelstein B, Young P, Watts GD, Meuleman J, Nelis E, Chance PF, Timmerman V, Stögbauer F, Kuhlenbäumer G. Genomic organization and mutation analysis of three candidate genes for hereditary neuralgic amyotrophy. Muscle Nerve 2004; 29:601-4. [PMID: 15052627 DOI: 10.1002/mus.20009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Hereditary neuralgic amyotrophy (HNA) is an autosomal-dominant inherited recurrent focal neuropathy affecting mainly the brachial plexus. In this study we report the genomic structure and mutation analysis of three candidate genes: sphingosine kinase 1 (SPHK1); tissue inhibitor of metalloproteinase 2 (TIMP2); and cytoglobin (CYGB). We did not find any disease-associated mutations, indicating that HNA is not caused by point mutations in these genes. However, we identified several sequencing errors in the cDNA of SPHK1 as well as seven novel single-nucleotide polymorphisms.
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Affiliation(s)
- Gert Hünermund
- Department of Neurology, University of Münster, Albert Schweitzer Strasse 33, 48129 Münster, Germany
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