Thymectomy for myasthenia gravis: 14-year experience

Area of Science:

• Neurology
• Surgical Oncology

Background:

• Myasthenia gravis (MG) is an autoimmune neuromuscular disease characterized by generalized weakness.
• Thymectomy, surgical removal of the thymus gland, is a potential treatment for MG.

Observation:

• Forty-eight consecutive patients with generalized MG underwent complete thymectomy.
• Surgical approaches included transsternal (46 patients) and left thoracotomy (2 patients with thymomas).
• No operative deaths occurred; one pediatric patient died post-discharge from pneumonia.

Findings:

• Of 47 evaluable patients, 6 achieved complete remission.
• 20 patients showed marked improvement with reduced medication needs.
• 18 patients experienced mild improvement with stable medication.
• Patient age, thymus histopathology, and acetylcholine receptor antibody titers did not significantly impact outcomes.
• Excluding patients under 20, shorter MG duration correlated with better surgical response.

Implications:

• Thymectomy is an effective therapeutic option for myasthenia gravis.
• Treatment benefits are observed irrespective of patient age or thymic pathology.
• Surgical intervention for MG warrants consideration, particularly in patients with shorter disease duration.