We present the case of a 33-year-old woman who within weeks developed severe swallowing difficulties and weakness in her limbs to an extent requiring hospitalization. Workup confirmed clinically suspected diagnoses of polymyositis and autoimmune myasthenia. A suspicion of malignant thymoma based on chest computed tomography was histologically verified. Patient treatment and response are presented. The case emphasizes the importance of recognizing that thymomas, in rare instances, may present with a combination of neuromuscular disorders in the same patient.
Download full-text PDF |
Source |
---|
Brain Behav
January 2025
Department of Neurology, Rambam Medical Center, Haifa, Israel.
Background: Myasthenia gravis (MG) is strongly associated with thymic tumors, but whether it is also associated with extrathymic cancers is debatable or whether MG can be considered a paraneoplastic disorder for extrathymic cancers.
Methods: This is a retrospective analysis of the MG cohort for 23 years' time (January 2000 to May 2023), extracting cancer rates with clinical, electrophysiological, and biochemical cancer associations and the effect of chronic medications.
Results: We identified 436 patients with MG and 3924 controls.
Ann Neurosci
January 2025
Department of Neurology, Pushpagiri Institute of Medical Sciences and Research Centre, Thiruvalla, Kerala, India.
Background: Myasthenia gravis is an autoimmune neuromuscular disease primarily caused by autoantibodies against nicotinic acetylcholine receptors (AChRs) at the neuromuscular junction. However, extrathymic malignancies need to be considered in the elderly population.
Purpose: Although thymic malignancy is the most common tumour association, several extrathymic malignancies complicated with myasthenia gravis have been reported.
Ann Thorac Surg Short Rep
December 2024
Division of Cardiothoracic Surgery, University of California, San Diego, California.
Thymomas have been associated with the generation of paraneoplastic autoantibodies to neurogenic epitopes, collapsin-response-mediator protein-5 receptor (CRMP-5) and alpha-amino-3-hydroxyl-5methyl-4isoxazolepropionic acid receptor (AMPAR), in patients with acute viral infection. We report a patient with thymoma and myasthenia gravis, with SARS-CoV-2 infection, who became comatose secondary to autoimmune encephalitis. Plasmapheresis, high-dose steroids, pyridostigmine, eculizumab, and rituximab did not restore neurologic function.
View Article and Find Full Text PDFMediastinum
November 2024
Department of Oncology, Mayo Clinic, Rochester, MN, USA.
Background: Thymoma is a rare mediastinal neoplasm originating from thymic epithelial cells, often associated with paraneoplastic syndromes. These syndromes can manifest as a range of autoimmune disorders, including myasthenia gravis, pure red cell aplasia, and aplastic anemia. Clinical trials involving the use of immune checkpoint inhibitors (ICIs) in thymoma have been complicated by a high incidence of immune-related adverse effects (irAEs).
View Article and Find Full Text PDFFront Surg
November 2024
Department of Thoracic Surgery, Istanbul University-Cerrahpaşa, Cerrahpaşa Medical Faculty, Istanbul, Türkiye.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!