Review Article
Thymoma in Myasthenia Gravis: From Diagnosis to Treatment
Table 1
The occurrence of the various muscle autoantibodies (ab) in the different subgroups of MG [
13].
| | MG subgroup | AChR ab | MuSK ab | Titin ab | RyR ab |
| | Early onset (non MuSK nonthymoma) | Positive in all patients | Negative in all patients | Positive in 10% of the patients | Negative in all patients | | Late onset (non-MuSK nonthymoma) | Positive in all patients | Negative in all patients | Positive in 58% of the patients | Positive in 14% of the patients | | MuSK positive (regardless onset age) | Negative in all patients | Positive in all patients | No information available | No information available | | Seronegative (regardless onset age) | Negative in all patients | Negative in all patients | Negative in all patients | Negative in all patients | | Thymoma (regardless of onset age) | Positive in all patients | May occur in some patients | Positive in 95% of the patients | Positive in 70% of the patients |
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