[Factors influencing long-term results of thymectomy for myasthenia gravis].

The long-term follow-up results after thymectomy for 92 patients with myasthenia gravis (MG) including 22 patients with thymomatous MG were discussed. All patients were followed up for 3 approximately 73 months (average 23). The surgical effective rate was 88.0% and late mortality 6.5%. Sex and disease duration were not obviously related to prognosis, but the effects were much better in 10 approximately 39 year-old groups than in the other groups. The modified Osserman's clinical classification, acetylcholine receptor (AchR) antibodies and citric acid extract (CAE) antibodies titers in plasma and pathological patterns of the surgical specimens of the thymus are factors affecting long-term results.