Outcome after thymectomy for myasthenia gravis: a retrospective review

This is a retrospective study of 54 patients, who in the period November 1977 to November 1986 underwent thymectomy as treatment for myasthenia gravis. Patients in whom difficulty attempting complete excision of the gland was anticipated were selected for a transthoracic procedure. All others underwent an initial transcervical approach, proceeding to an upper sternal splitting incision if further access was required to remove adequately a large gland. The sample was split almost equally between the two surgical procedures. Patients in the transthoracic group were significantly older and experienced significantly greater peri-operative morbidity or mortality. There was no significant difference in outcome between the two groups, 52% achieving a good result (defined as remission or clinically significant improvement of symptoms) that was sustained over the five year follow-up period. In our opinion, complete removal of the thymus should be the goal of surgical treatment for myasthenia gravis.