Abstract
Post-thymomectomy myasthenia gravis (PTMG) occurred 4 months postoperatively in a 37-year-old woman who had undergone complete removal of a non-invasive (Masaoka stage I) thymoma by thoracoscopic left hemithymectomy. The diagnosis of PTMG was made based on the clinical symptoms, wanning of the extremities, and an abnormally elevated titer of serum anti-acetylcholine receptor antibody. Four months after onset of PTMG (Osserman IIB), she underwent completion thymectomy (extirpation of the remnant thymus and the perithymic adipose tissue) by video-assisted thoracoscopic procedure from the right side, which resulted in complete remission of MG 6 months postoperatively. The incidence of PTMG is unpredictable and therefore warrants a therapeutic strategy designed for treating patients with non-myasthenic thymomas, including indication of completion thymectomy.
