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Chompoopong P, Almarwani B, Katirji B. Neuropathy associated with IgA monoclonal Gammopathy. A harbinger of AL amyloidosis. J Neurol Sci 2021; 422:117336. [PMID: 33578240 DOI: 10.1016/j.jns.2021.117336] [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: 12/04/2020] [Revised: 01/11/2021] [Accepted: 02/01/2021] [Indexed: 10/22/2022]
Abstract
Peripheral neuropathy is seen in 15% of patients with IgA monoclonal gammopathy. Treatment and prognosis of dysproteinemic neuropathy is usually guided by the underlying plasma cell disorders, which could be either benign or malignant. The true incidence of hematologic malignancy in patients with neuropathy associated with IgA monoclonal gammopathy is not known. However, patients with IgA M-protein are generally at increased risk for malignant transformation. Since neuropathy may be the first and only organ involvement, neurologists are key contributors in identifying each patient's plasma cell dyscrasia. We report two patients who presented with severe progressive polyneuropathy, had a detectable low-level IgA lambda paraproteinemia dismissed as incidental. Both were diagnosed later with a combination of malignant plasma cell dyscrasia and AL amyloidosis resulting in multiorgan failure and death. Both patients demonstrated red flags for malignant progression including abnormal serum free light chain, rapidly progressive debilitating neuropathy refractory to immunotherapy, prominent autonomic dysfunction, and weight loss. In summary, patients with IgA monoclonal gammopathy presenting with polyneuropathy can be at risk for malignant transformation. Failure to investigate for hematologic malignancy and AL amyloidosis may cause significant delays in treatment and result in fatal outcomes.
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Affiliation(s)
- Pitcha Chompoopong
- Department of Neurology, University Hospitals Cleveland Medical Center, Case Western Reserve University School of Medicine, Cleveland, OH, United States of America.
| | - Bayan Almarwani
- Department of Neurology, University Hospitals Cleveland Medical Center, Case Western Reserve University School of Medicine, Cleveland, OH, United States of America
| | - Bashar Katirji
- Department of Neurology, University Hospitals Cleveland Medical Center, Case Western Reserve University School of Medicine, Cleveland, OH, United States of America
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What the Intensivists Need to Know About Critically Ill Myeloma Patients. ONCOLOGIC CRITICAL CARE 2020. [PMCID: PMC7121630 DOI: 10.1007/978-3-319-74588-6_98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Multiple myeloma (MM) is a hematological malignancy characterized by an increase in aberrant plasma cells in the bone marrow leading to rising monoclonal protein in serum and urine. With the introduction of novel therapies with manageable side effects, this incurable disease has evolved into a chronic disease with an acceptable quality of life for the majority of patients. Accordingly, management of acute complications is fundamental in reducing the morbidity and mortality in MM. MM emergencies include symptoms and signs related directly to the disease and/or to the treatment; many organs may be involved including, but not limited to, renal, cardiovascular, neurologic, hematologic, and infectious complications. This review will focus on the numerous approaches that are aimed at managing these complications.
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Kinno R, Osakabe Y, Takahashi S, Kurokawa S, Owan Y, Ono K, Baba Y. Nonsystemic vasculitic neuropathy in a patient with IgG-monoclonal gammopathy of undetermined significance: A case report. Medicine (Baltimore) 2020; 99:e19036. [PMID: 32000451 PMCID: PMC7004602 DOI: 10.1097/md.0000000000019036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
RATIONALE Monoclonal gammopathy of undetermined significance (MGUS) is a plasma cell proliferative disorder that consistently precedes multiple myeloma. Peripheral neuropathy in patients with IgG-MGUS tends to vary in clinical phenotype. We report a rare case of a patient with IgG-MGUS who had nonsystemic vasculitic neuropathy (NSVN). PATIENT CONCERNS A 56-year-old Japanese woman presented with progressive sensory ataxia with episodic paresthesia. Her clinical and laboratory values were compatible with IgG-MGUS. A nerve conduction study suggested possible chronic inflammatory demyelinating polyneuropathy. However, intravenous immunoglobulin therapy was not effective. A sural nerve biopsy specimen revealed mildly reduced myelinated fiber density and myelin ovoid formation, with epineural arterioles infiltrated by inflammatory cells. DIAGNOSES We accordingly diagnosed her condition as NSVN. INTERVENTIONS She was accordingly started on oral prednisolone (40 mg/d) at 3 months after the onset of her neurological symptoms. OUTCOMES At 1 year after the oral prednisolone treatment was begun, the patient's neurological symptoms showed no worsening. LESSONS These findings indicate NSVN as a possible cause of peripheral neuropathy in patients with IgG-MGUS. Cumulatively, our findings highlight the need for a nerve biopsy for peripheral neuropathy in patients with IgG-MGUS as a possible cause of NSVN. The early diagnosis of NSVN is expected to be beneficial for such patients.
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Affiliation(s)
- Ryuta Kinno
- Department of Neurology, Showa University Fujigaoka Hospital, Fujigaoka Aoba-ku, Yokohama-shi, Kanagawa
| | - Yuyuko Osakabe
- Department of Neurology, Showa University Fujigaoka Hospital, Fujigaoka Aoba-ku, Yokohama-shi, Kanagawa
| | - Seiya Takahashi
- Department of Neurology, Showa University Fujigaoka Hospital, Fujigaoka Aoba-ku, Yokohama-shi, Kanagawa
| | - Shinji Kurokawa
- Department of Neurology, Showa University Fujigaoka Hospital, Fujigaoka Aoba-ku, Yokohama-shi, Kanagawa
| | - Yoshiyuki Owan
- Department of Neurology, Showa University Fujigaoka Hospital, Fujigaoka Aoba-ku, Yokohama-shi, Kanagawa
| | - Kenjiro Ono
- Division of Neurology, Department of Medicine, Showa University School of Medicine, Hatanodai Shinagawa-ku, Tokyo
| | - Yasuhiko Baba
- Department of Neurology, Showa University Fujigaoka Hospital, Fujigaoka Aoba-ku, Yokohama-shi, Kanagawa
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Rosenbaum E, Marks D, Raza S. Diagnosis and management of neuropathies associated with plasma cell dyscrasias. Hematol Oncol 2017; 36:3-14. [PMID: 28397326 DOI: 10.1002/hon.2417] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 02/14/2017] [Accepted: 03/06/2017] [Indexed: 12/16/2022]
Abstract
Neuropathies associated with plasma cell dyscrasias are a major cause of morbidity for patients managed by medical oncologists. Because of similarities in clinical presentation and on nerve conduction studies, identifying the underlying disease leading to a paraproteinemic neuropathy can often be difficult. In addition, the degree of neurologic deficit does not strictly correlate with the extent of abnormalities on common clinical laboratory testing. Fortunately, with increasing understanding into the biologic mechanisms of underlying hematologic diseases, additional biomarkers have recently been developed, thus improving our diagnostic capacity. Neuropathies associated with plasma cells dyscrasias are seen with Monoclonal gammopathy of undetermined significance (MGUS) particularly IgM subtype, followed by IgG and IgA MGUS, multiple myeloma, Waldenström's macroglobulinemia, amyloid, Castleman's disease, and POEMS syndrome. The mechanisms of neuronal injury associated with plasma cell dyscrasia vary based on underlying diagnosis and include malignant infiltration, immune-mediated antibody deposition, or local compression of nerve roots. The polyneuropathies are frequently demyelinating, although axonal and mixed neuropathies can also be seen. As demonstrated by the cases included in this review, patients frequently present with symmetric sensory disturbance, followed by progressive motor weakness. Unfortunately, because of the complexity of diagnostic testing, patients are frequently examined late, often after receiving several ineffective therapies. The aim of this case-based review is to provide clinicians with insight on how to properly recognize these atypical neuropathies and send the appropriate diagnostic work, increasing the likelihood of accurately classify the patient's underlying hematologic disorder.
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Affiliation(s)
- Evan Rosenbaum
- Division of Hematology & Oncology, Columbia University Medical Center, New York, NY, USA
| | - Douglas Marks
- Division of Hematology & Oncology, Columbia University Medical Center, New York, NY, USA
| | - Shahzad Raza
- Division of Hematology & Oncology, Columbia University Medical Center, New York, NY, USA
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Grammatico S, Cesini L, Petrucci MT. Managing treatment-related peripheral neuropathy in patients with multiple myeloma. Blood Lymphat Cancer 2016; 6:37-47. [PMID: 31360079 PMCID: PMC6467335 DOI: 10.2147/blctt.s91251] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Peripheral neuropathy is one of the most important complications of multiple myeloma treatment. Neurological damage can be observed at the onset of the disease, due to the effect of monoclonal protein or radicular compression, but more often is treatment related. Vinca alkaloids in the past era, and more recently, thalidomide and bortezomib are mainly responsible. Degeneration of dorsal root ganglion is common, prevalently related to angiogenesis inhibition and cytokine modulation in the case of thalidomide and inhibition of the ubiquitin proteasome system in the case of bortezomib. Sensory neuropathy and neuropathic pain are more common; motor neuropathy and autonomic damage are less frequently observed. Neurotoxicity often affects patient's quality of life and requires dose modification or withdrawal of therapy, with a possible effect on the overall response. A prompt recognition of predisposing factors (such as diabetes mellitus, alcohol abuse, vitamin deficiencies, or viral infections) and appearance of signs and symptoms, through a periodic neurological assessment with appropriate scales, is extremely important. Effective management of treatment at the emergence of peripheral neuropathy can minimize the incidence and severity of this complication and preserve therapeutic efficacy. Dose adjustment could be necessary during treatment; moreover, gabapentin or pregabalin, tricyclic antidepressants, serotonin and norepinephrine reuptake inhibitors, carbamazepine, and opioid-type analgesics are suggested according to the pain severity. Some authors reported that patients who develop peripheral neuropathy during their multiple myeloma treatments presented a particular gene expression profile; therefore, future studies could be helpful for a better understanding of possible biological pathways underlying neurotoxicity.
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Affiliation(s)
- Sara Grammatico
- Division of Hematology, Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy,
| | - Laura Cesini
- Division of Hematology, Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy,
| | - Maria Teresa Petrucci
- Division of Hematology, Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy,
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Clinical spectrum and evolution of monoclonal gammopathy-associated neuropathy: an observational study. Neurologist 2013; 18:378-84. [PMID: 23114670 DOI: 10.1097/nrl.0b013e31826a99e9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Paraproteinemic neuropathy (PPN) is often under-diagnosed because of its clinical and electrophysiological variability. Progression of neuropathy is considered an alarm bell for possible malignant conversion of underlying monoclonal gammopathy (MG). OBJECTIVE To report clinical presentation, course, and evolution in a group of patients with PPN in order to identify findings useful for achieving the diagnosis, suspecting progression, and recognizing the underlying hematological conditions. PATIENTS AND METHODS Thirty-nine patients with PPN underwent clinical examination, electrodiagnostic studies, cerebrospinal fluid analysis, and laboratory tests. These parameters were compared between the different peak groups. RESULTS IgM MG was found in 51.4%, IgG MG in 33.3%, and IgA MG in 10.3% of our cohort. PPN appeared as mainly sensory, demyelinating, mildly progressive neuropathy, regardless of the type of peak or light chain. However, axonal findings were present in many IgG patients and in part of the IgM patients and a small number of the IgG patients may have presented with motor symptoms at the onset. The IgM patients had a significant tendency toward clinical worsening and IgG subjects had a more elevated rate of malignancy. IgA-related neuropathies were rare, heterogenous, and with a high tendency to evolution and malignancy. CONCLUSIONS Most of PPN often present a relatively monomorphic clinical picture but they can be clinically heterogenous and must be suspected even if sensory impairment and demyelination are not the dominant features. Tendency to malignancy seems globally elevated and needs intensive follow-up. Diagnostic approach to patients presenting with peripheral neuropathy should always include the typing of monoclonal immunoglobulins in serum and urine. In contrast, patients presenting with MG should be submitted to nerve conduction study/electroneurography and neurological evaluation.
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Subclinical pretreatment sensory deficits appear to predict the development of pain and numbness in patients with multiple myeloma undergoing chemotherapy. Cancer Chemother Pharmacol 2013; 71:1531-40. [PMID: 23543296 DOI: 10.1007/s00280-013-2152-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 03/17/2013] [Indexed: 12/15/2022]
Abstract
PURPOSE Chemotherapy-induced peripheral neuropathy is a major complication in the treatment for cancer, including multiple myeloma (MM). Patients may develop painful and non-painful (e.g., numbness) neuropathy symptoms that impair function and often persist after therapy is terminated. This study tested the hypothesis that baseline subclinical neuropathy, as assessed by sensory thresholds, is related to the development of neuropathy symptoms (e.g., pain and numbness) in patients with MM undergoing treatment with chemotherapy. METHODS Patients (n = 56) who had undergone two or fewer cycles of induction therapy and who had no evident neuropathy were assessed using quantitative sensory tests to determine multiple-modality sensory thresholds. Patient-reported pain and numbness were assessed through induction therapy (16 weeks) via the MD Anderson Symptom Inventory. A subset of participants (n = 15) continued reporting on their symptoms for an additional 16 weeks ("maintenance phase"). RESULTS Patients with sharpness detection deficits at baseline (n = 11, 20 % of sample) reported less severe pain and numbness during induction therapy and less numbness during maintenance therapy (P < 0.05). During the maintenance phase, patients with warmth detection deficits (n = 5, 38 % of sample) reported more severe pain and numbness, and those with skin temperature deficits (n = 7, 47 % of maintenance sample) reported more severe pain (P < 0.05). These deficits were related to patient reported difficulty walking, a common symptom of peripheral neuropathy. CONCLUSION Our results suggest that baseline subclinical sensory deficits may be related to a patient's risk for developing chemotherapy-induced peripheral neuropathy.
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Galiè E, Acqua MLD, Maschio M, Koudriavtseva T, Marco ED, Jandolo B. Central and peripheral neurological involvement in monoclonal gammopathies of undetermined significance. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/wjns.2013.34038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Lee EQ, Arrillaga-Romany IC, Wen PY. Neurologic complications of cancer drug therapies. Continuum (Minneap Minn) 2012; 18:355-65. [PMID: 22810132 DOI: 10.1212/01.con.0000413663.42798.64] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
PURPOSE OF REVIEW The purpose of this article is to review neurologic complications associated with systemic anticancer therapies. RECENT FINDINGS Although neurologic complications from traditional chemotherapies are well described, most neurologists are less familiar with complications from agents that target specific pathways or receptors. This article also reviews the most common neurologic adverse effects associated with newer targeted agents. SUMMARY Patients with cancer are living longer because of earlier diagnoses and remarkable improvements in treatments. Unfortunately, both traditional chemotherapies and newer targeted agents are known to cause neurologic symptoms that can impact quality of life and play a role in limiting potential treatments. Acute, subacute, and chronic syndromes may affect the central or peripheral nervous system. Since treatments for therapy-induced neurotoxicity are limited, awareness of common neurologic complications is important to prevent permanent damage.
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Affiliation(s)
- Eudocia Quant Lee
- Center for Neuro-oncology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA.
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Bianchi G, Ghobrial IM. Does my patient with a serum monoclonal spike have multiple myeloma? Hematol Oncol Clin North Am 2012; 26:383-93, ix. [PMID: 22463833 DOI: 10.1016/j.hoc.2012.02.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A monoclonal spike on serum protein electrophoresis is a frequent finding in the general population and pathognomonic of a plasma cell dyscrasia. In otherwise healthy individuals, it is diagnostic of two asymptomatic, premalignant conditions called monoclonal gammopathy of undetermined significance (MGUS) and smoldering multiple myeloma (SMM) which carry a lifelong risk of progression to multiple myeloma (MM) or related malignancy. This article discusses the criteria for diagnosis of MGUS, SMM, and MM; current recommendations for follow-up and risk factors for progression to MM of patients with MGUS and SMM; and diagnostic evaluation of suspected MM transformation.
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Affiliation(s)
- Giada Bianchi
- Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
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Bayat E, Kelly JJ. Neurological complications in plasma cell dyscrasias. HANDBOOK OF CLINICAL NEUROLOGY 2012; 105:731-46. [PMID: 22230530 DOI: 10.1016/b978-0-444-53502-3.00020-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- Elham Bayat
- Department of Neurology, The George Washington University, Washington, DC, USA
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Mohty B, El-Cheikh J, Yakoub-Agha I, Moreau P, Harousseau JL, Mohty M. Peripheral neuropathy and new treatments for multiple myeloma: background and practical recommendations. Haematologica 2010; 95:311-9. [PMID: 20139393 DOI: 10.3324/haematol.2009.012674] [Citation(s) in RCA: 125] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
In multiple myeloma, peripheral neuropathy has for a long time been considered as mainly secondary to the plasma cell dyscrasia itself. With the advent of new targeted drugs such as thalidomide and bortezomib, the iatrogenic neurotoxicity has become the leading cause of peripheral neuropathy. This review discusses the pathogenesis, incidence, risk factors, diagnosis, characteristics, and management of peripheral neuropathy related to new multiple myeloma drugs, mainly bortezomib and thalidomide. The current knowledge of the pathophysiology of the new forms of peripheral neuropathy is still limited. The mechanisms involved depend on the agents used, patient's medical history, and duration of exposure and/or treatment doses or sequence. Diagnosis of such peripheral neuropathy is often easier than treatment. A full anamnesis and regular clinical evaluation are necessary. Electrophysiological assessments may support the diagnosis, although their contribution remains insufficient. Complex clinical features may require a specialized neurological assessment within the context of a multi-disciplinary approach. Finally, early detection of peripheral neuropathy and the use of dose adjustment algorithms as in the case of bortezomib, should help reduce the side effects while maintaining anti-tumor efficacy.
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Affiliation(s)
- Bilal Mohty
- 1Service d'Hématologie, Hopital Universitaire de Genève, Geneva, Switzerland
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Berenson JR, Anderson KC, Audell RA, Boccia RV, Coleman M, Dimopoulos MA, Drake MT, Fonseca R, Harousseau JL, Joshua D, Lonial S, Niesvizky R, Palumbo A, Roodman GD, San-Miguel JF, Singhal S, Weber DM, Zangari M, Wirtschafter E, Yellin O, Kyle RA. Monoclonal gammopathy of undetermined significance: a consensus statement. Br J Haematol 2010; 150:28-38. [PMID: 20507313 DOI: 10.1111/j.1365-2141.2010.08207.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
On February 25, 2009, a panel of international experts on plasma cell dyscrasia and skeletal disease met to discuss monoclonal gammopathy of undetermined significance (MGUS). This non-malignant B-cell disorder is the most common plasma cell dyscrasia and is associated with an increased risk of developing serious B-cell disorders. Individuals with MGUS also have an increased risk of osteoporosis and osteopenia associated with an increased likelihood of developing fractures especially in the vertebral column, peripheral neuropathy and thromboembolic events. The goal of the meeting was to develop a consensus statement regarding the appropriate tests to screen, evaluate and follow-up patients with MGUS. The panel also addressed the identification and treatment of MGUS-related skeletal problems, thromboembolic events and neurological complications. The following consensus statement outlines the conclusions and marks the first time that a consensus statement for the screening and treatment of MGUS has been clearly stated.
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Affiliation(s)
- James R Berenson
- Institute for Myeloma & Bone Cancer Research, West Hollywood, CA 90069, USA.
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Bühler R, Mattle HP. Hematological diseases and stroke. HANDBOOK OF CLINICAL NEUROLOGY 2009; 93:887-934. [PMID: 18804686 DOI: 10.1016/s0072-9752(08)93045-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Robert Bühler
- Department of Neurology, Iselspital, University of Bern, Bern, Switzerland
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Cavaco R, Machado C, Gorjão Clara J. [Shouldn't the Achilles' heel be on the foot - regarding a clinical case]. REVISTA PORTUGUESA DE PNEUMOLOGIA 2008; 14:869-74. [PMID: 19023500 DOI: 10.1016/s0873-2159(15)30292-0] [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: 11/18/2022] Open
Abstract
Clinical suspicion is the bedrock of a thorough clinical work-up, and a review of the clinical files with no definitive diagnosis is a must. Such a review can uncover rare diagnoses, such as Waldenstrom's macroglobulinaemia, a proliferative B-cell disease characterised by medular infiltration and monoclonocal IgM production. 1% of these are biclonal. We present a case of a 74 year old patient diagnosed in October 2004 with acute cholecystitis. Surgical evaluation revealed bilateral pleural effusion with an inconclusive aetiology. Patient underwent a right pleurodesis in May 2005 and the aetiology remained inconclusive. The third evaluation, in July 2005, led to a final diagnosis of Waldenstrom's macroglobulinaemia.
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Affiliation(s)
- Raquel Cavaco
- Internato Complementar de Medicina Interna, Serviço de Medicina Interna II do Hospital de Pulido Valente.
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Neurological Manifestations of Hematological Disease. Neurobiol Dis 2007. [DOI: 10.1016/b978-012088592-3/50061-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Abstract
The paraneoplastic neurologic disorders (PND) are a diverse group of diseases characterized by the presence of neurologic dysfunction in the setting of a remote cancer. PND can affect almost any part of the nervous system, and are most commonly associated with lung cancer (small cell) and gynecologic tumors. Laboratory studies have demonstrated that an autoimmune response links the neurologic disorder and the cancer, and established a model whereby the cancer is believed to initiate the syndrome by expressing a protein antigen normally expressed in the nervous system, leading to anti-tumor immune response followed by autoimmune neurologic symptoms. We review the currently known PND and their pathogenesis.
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Affiliation(s)
- Robert B Darnell
- Howard Hughes Medical Institute and Laboratory of Molecular Neuro-Oncology, The Rockefeller University, New York, NY 10021, USA.
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Stojkovic T. Les neuropathies périphériques : orientations et moyens diagnostiques. Rev Med Interne 2006; 27:302-12. [PMID: 16517027 DOI: 10.1016/j.revmed.2005.10.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2005] [Accepted: 10/24/2005] [Indexed: 01/11/2023]
Abstract
PURPOSES Neuropathies are defined as dysfunction of peripheral nerves, which may show motor, sensory and autonomic symptoms. Although most neuropathies are symmetric, it is important to distinguish a polyneuropathy from a mononeuropathy, a multiple mononeuropathy or a polyradiculoneuropathy. Electrophysiological procedures are helpful in determining the pathological process which may be either an axonopathy, a myelinopathy or a neuronopathy. MAIN POINTS Major progresses have been made in the ten past years in the management and diagnostic approaches of peripheral neuropathy. The history and the physical examination are the first steps to the evaluation of patients with peripheral neuropathy. Electrodiagnostic studies and then laboratory tests are the next step in the diagnostic procedures of peripheral neuropathies. These will lead to a proper identification of the cause of neuropathy, allowing to develop a specific treatment for the patient. However, even after a careful work-up of a patient with neuropathy, 25 to 40% of patients with polyneuropathies remain undiagnosed. PERSPECTIVES Further development are focused in better understanding the pathogenesis and molecular mechanisms of peripheral nerve diseases in order to provide a specific and adequate treatment for each neuropathy.
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Affiliation(s)
- T Stojkovic
- Clinique Neurologique, Service du Professeur Vermersch, Hôpital Roger-Salengro, CHRU de Lille, 59037 Lille cedex, France.
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