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Late onset cerebellar ataxia syndrome after non-paraneoplastic Lambert-Eaton myasthenic syndrome: a case study.
BMC Neurol
January 2025
Neuromuscular Neurology, Advocate Health, 1850 Dempster Street, Park Ridge, IL, 60068, USA.
This is an unusual case of voltage gated calcium channel (VGCC) antibodies leading to two distinct and chronologically separated neurologic syndromes without the presence of an underlying neoplasm. Lambert Eaton Myasthenic Syndrome (LEMS) presented five years prior to cerebellar ataxia. Both LEMS and cerebellar ataxia were responsive to treatment, but not the same therapy.
View Article and Find Full Text PDFClinical presentations, electrophysiologic features, and long-term follow-up in Lambert-Eaton myasthenic syndrome: a series of six patients.
Front Neurol
December 2024
Department of Internal Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia.
Background: Lambert-Eaton myasthenic syndrome (LEMS) is an autoimmune disorder of the presynaptic neuromuscular junction associated with antibody mediated dysfunction of voltage-gated calcium channels (VGCCs). LEMS can exist as a paraneoplastic syndrome, paraneoplastic-LEMS (P-LEMS), when associated with tumors, most commonly, small cell lung carcinoma (SCLC) or as a non-paraneoplastic condition (NP-LEMS) when no malignancies are detected.
Methods: A retrospective chart review was conducted in 3 tertiary hospitals in Saudi Arabia for patients diagnosed with LEMS between January 2010 and January 2020.
Paraneoplastic Syndromes of the Nervous System in Patients Suffering from SCLC. A Review of the Recent Literature.
Acta Med Acad
August 2024
Medical School, National and Kapodistrian University of Athens, Athens, Greece.
Background: Paraneoplastic Neurological Syndromes (PNS) constitute a heterogeneous cluster of disease manifestations related to various cancers. Small Cell Lung Cancer (SCLC) is strongly related to PNS. This narrative review conducted a survey in the available PubMed literature to highlight the appearance of PNSs in SCLC cases and discuss published research highlights on the subject so that general practitioners can be acquainted with the medical phenomenon present in SCLC patients.
View Article and Find Full Text PDFPre-existing Lambert-Eaton Myasthenic Syndrome and Scleroderma in a Patient with Neuroendocrine Carcinoma Undergoing Immune Checkpoint Inhibitor Cancer Immunotherapy.
J Neuroimmunol
January 2025
Department of Neurology, Mayo Clinic, Rochester, MN, USA; Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA; Center for MS and Autoimmune Neurology, Mayo Clinic, Rochester, MN, USA. Electronic address:
Introduction: Paraneoplastic neurological syndromes (PNS) can worsen with immune checkpoint inhibitor (ICI) cancer immunotherapy.
Case Report: A 66-year-old female with paraneoplastic Lambert-Eaton Myasthenic Syndrome (LEMS), which led to the diagnosis of metastatic neuroendocrine carcinoma, was treated with intravenous immune globulin (IVIg) (with minimal response), chemotherapy, and radiation, resulting in neurological improvement. However, sclerodermatous changes developed after a year.
Difficult Differential Diagnosis of Paraneoplastic Neuromuscular Diseases Associated with Small Cell lung Cancer: A Report of Two Cases.
Tokai J Exp Clin Med
December 2024
Division of Pulmonary Medicine, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa 259-1193, Japan.
Article Synopsis
- Lambert-Eaton Myasthenic Syndrome (LEMS) is a neurological condition often associated with small cell lung cancer and shares symptoms with myasthenia gravis (MG), leading to potential misdiagnosis.
- The article presents two cases where patients with small cell lung cancer exhibited LEMS-like symptoms, but had unique electromyographic results that complicated diagnosis.
- Both patients did not respond well to standard treatments for MG and tested positive for a specific antibody linked to LEMS, highlighting the challenges in distinguishing between LEMS and MG based on clinical and EMG criteria.
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