In table 10 the results we have obtained are com¬ pared with the results in the largest series of cases reported to date, that is, those of Blalock,5 Harvey,6 Viets 7 and Keynes and associates.8
SUMMARY AND CONCLUSIONSComparison of 72 cases of myasthenia gravis in which surgical treatment was employed with 142 control cases in which nonsurgical treatment was used shows that the favorable results occur more frequently among the surgical cases.Further analysis of the groups suggests that factors having to do with selection of cases for surgery accounted for the better results among the surgical cases.