Thymectomy Indications in Myasthenia Gravis

Absolute Indication: Thymoma-Associated MG

Thymectomy is mandatory in all patients with thymoma, as 30-50% of thymoma patients have Myasthenia Gravis (MG), and approximately 20% of mortality in thymoma patients is directly attributable to MG itself rather than the tumor, according to the American College of Chest Physicians 2
Complete thymectomy is preferred, especially for patients with MG, as local recurrences have been observed after partial procedures, as recommended by the European Society of Thoracic Surgeons 3, 4
All patients with suspected thymoma must have serum anti-acetylcholine receptor antibody levels measured preoperatively to avoid respiratory failure during anesthesia, as suggested by the American Academy of Neurology 5

Thymectomy should be evaluated in all appropriate anti-acetylcholine receptor (AChR)-positive patients, as it may substantially reduce symptoms by terminating the provision of high-affinity anti-AChR antibody-producing cells from the thymus to peripheral organs, according to the American College of Cardiology 1, 2

Total thymectomy is preferred over partial resection, particularly for MG patients, as complete removal of all thymic tissue including perithymic fat is necessary to prevent local recurrences, as recommended by the Society of Thoracic Surgeons 3, 4

Neurologist consultation and treatment optimization are mandatory before surgery if MG is present to prevent perioperative respiratory complications, as suggested by the American Academy of Neurology 2
Particular care with anesthetic agents is required given potential respiratory muscle weakness, according to the American Society of Anesthesiologists 1