EVALUATION OF MID-TERM RESULTS OF THYMECTOMY SURGERY IN THE TREATMENT OF MYASTHENIA GRAVIS DISEASE

Luân Trần Minh Bảo, Bình Nguyễn Hoàng, Đăng Nguyễn Viết Quang, Châu Trần Lê Bảo

Main Article Content

Abstract

Objectives: To evaluate the effectiveness of thymectomy by video-assisted thoracoscopic surgery in the treatment of myasthenia gravis. Methods: This is a retrospective study, describing a series of cases conducted at the Department of Thoracic Surgery, Cho Ray Hospital. Results: from January 2020 to January 2024, there were 62 patients including: 33 (53.20%) cases of myasthenia gravis with thymic tumors and 29 (46.80%) cases of myasthenia without thymic tumors. Video-Assisted Thoracoscopic Surgery (VATS): 23 cases, Robot-Assisted Thoraocsopic Surgery (RATS): 39 cases. The mean operation time of the study group was 143.63 ± 40.06 minutes (80 - 270). No complications were noted during surgery. The rate of postoperative complications was 14.5% (9/62), of which: respiratory failure 11.3% and myasthenic crisis 3.2%. The disease improvement rate was 55.7%, no change was 41.4%. The rates of ptosis and dysphagia decreased 12  months after surgery from 45.2% to 30.6% and 8.1% to 3.2%, respectively. 21% of patients had their medication dose reduced after surgery. There was no statistically significant difference in mid-term outcomes between the two groups of myasthenia gravis with tumors and without tumors. Conclusion: Thoracoscopic thymectomy in treatment of myasthenia gravis has good mid-term results, improving disease improvement rates, reducing symptoms and reducing medication dosage after surgery.

Article Details

References

1. Wolfe GI, Kaminski HJ, Aban IB, et al. Long-term effect of thymectomy plus prednisone versus prednisone alone in patients with non-thymomatous myasthenia gravis: 2-year extension of the MGTX randomised trial. Lancet Neurol. 2019. 18: 259-68. https://doi.org/ 10.1016/S1474-4422(18)30392-2.
2. Seyfari B, Fatehi F, Shojaiefard A, et al. Clinical outcome of thymectomy in myasthenia gravis patients: A report from Iran. Iran J Neurol. 2018 Jan 5. 17(1): 1-5. PMID: 30186552; PMCID: PMC6121207.
3. Jaretzki A., Barohn R.J., Ernstoff R.M., et al. Myasthenia gravis: recommendations for clinical research standards. Task Force of the Medical Scientific Advisory Board of the Myasthenia Gravis Foundation of America. Ann Thorac Surg. 2000. 70(1): 327-334.
4. Xie X, Gan X, Chen B, et al. Left- and right-sided video-assisted thoracoscopic thymectomy exhibit similar effects on myasthenia gravis. J Thorac Dis. 2016. 8: 124–32.
5. Zhiyi Liu, Jiansheng Yang, Liangan Lin, et al. Unilateral video-assisted thoracoscopic extended thymectomy offers long-term outcomes equivalent to that of the bilateral approach in the treatment of non-thymomatous myasthenia gravis. Interactive cardiovascular and thoracic surgery. 2015. 21: 610-615.
6. Aljaafari D, Ishaque N. Thymectomy in Myasthenia Gravis: A Narrative Review. Saudi J Med Med Sci. 2022 May-Aug. 10(2): 97-104. doi:10.4103/sjmms.sjmms_80_22. Epub 2022 Apr 29. PMID: 35602390; PMCID: PMC9121707.
7. Mai Văn Viện, Lê Việt Anh. Kết quả ứng dụng phẫu thuật nội soi lồng ngực cắt bỏ u tuyến ức điều trị bệnh nhược cơ tại Bệnh viện 103. Tạp chí Phẫu thuật Tim mạch và Lồng ngực Việt Nam. 2020. 3: 22-27. https://doi.org/10.47972/vjcts. v3i.305.
8. Nguyễn Văn Tuân, Đinh Thị Lợi, Nguyễn Anh Tuấn. Một số yếu tố liên quan đến kết quả điều trị của bệnh nhân nhược cơ sau phẫu thuật cắt tuyến ức. Tạp Chí Y học Việt Nam. 2024. 535(1B): 293-298. https://doi.org/10.51298/vmj.v535i1B. 8448.
9. Khawaja I. Effect of Thymectomy on Outcomes of Myasthenia Gravis Patients: A Case-Control Study at a Tertiary Care Hospital. Cureus. 2023 Apr 14. 15(4): e37584. doi: 10.7759/cureus. 37584. PMID: 37193448; PMCID: PMC10183232.
10. Rath J, Taborsky M, Moser B, et al. Short-term and sustained clinical response following thymectomy in patients with myasthenia gravis. Eur J Neurol. 2022 Aug. 29(8): 2453-2462. doi: 10.1111/ene.15362. Epub 2022 Apr 30. PMID: 35435305; PMCID: PMC9541265.